泰德的好友马修跟莉莉订婚之后，让泰德也想急于找到他自己的终身伴侣，这时候他在酒吧遇见罗宾。然而泰德在第一次跟罗宾约会的时候就对罗宾说我爱你，这让罗宾有些却步。同时，马修开香槟庆祝订婚的时候不小心打伤莉莉的眼睛，于是莉莉暂时得跟海盗一样戴上眼罩。

为了追求罗宾，泰德举办了派对邀请罗宾参加，但是因为罗宾一直没有出现，所以泰德就连续举办，最后罗宾终于现身，但两人还是没有正式约会。

泰德同意跟巴尼一同去把妹，结果却一路跑到费城，最后还舔了自由钟。同时莉莉想证明自己虽然订婚但还是很有魅力。

泰德试图回头找一位前女友，但是因为以前泰德先跟对方分手，所以对方不是很开心。同时，巴尼拿金钱诱惑罗宾在播报新闻时讲出一些稀奇古怪的内容。

罗宾邀请泰德和巴尼同去一家很难进去的俱乐部。同时莉莉和马修试图让自己的生活能够更成熟一点。

到了一年一度的万圣节，泰德首度说出他在等待他的“放荡南瓜妹”。同时，马修莉莉跟罗宾和他的新男友一起约会，却发现罗宾对待她男友的态度似乎不够亲密。

罗宾去采访宣称配对率100%的相亲公司，这让泰德感兴趣并前往参加。结果对方却发现计算机程序在诺大的纽约也不能帮泰德找到对象，这让泰德大伤脑筋。同时，马修和莉莉在家里发现像是蟑螂和老鼠合体的奇怪生物。

当莉莉决定要跟马修和泰德一起住的时候，泰德开始担心他的生活会转变。同时，巴尼向罗宾推荐一个新的约会法，罗宾并不相信他。

泰德跟罗宾决定在感恩节当义工分发食物，结果却意外的发现巴尼也在那边。同时，莉莉随马修回老家却发现有点适应不良。

泰德醒过来之后发现他的脚踝受伤，夹克被烧了一个洞，一名裸体女子躺在他床上，还有一颗菠萝在床头。因此泰德决心搞清楚昨天晚上到底发生什么事。

泰德在跨年的那一个晚上租了加长礼车跟其他人一起去参加跨年派对。但是罗宾却要跟她的男朋友去约会。经过了一整晚，最后罗宾回到大伙身边，而泰德终于获得他最想要的罗宾的吻。

泰德准备带罗宾参加婚礼让她增加对自己的好感，到头来却发现他之前根本没有填携伴参加，于是一番折腾之后，泰德终于获得新娘首肯可以携伴参加，但是罗宾最后却反而没有出现，不过泰德在婚礼上遇见一位新人。

泰德跟大伙说他在婚礼上遇见一名相当神秘的女子，他们度过了一个相当神奇的夜晚，两人同意不交换名字或是其他联络方法，但是后来泰德相当后悔并且想要找到她。

维多利亚说服泰德让两人的交往循序渐进、慢慢深入，她还表示要约会二十次才能一同做爱，这让泰德身受煎熬。同时，罗宾跟巴尼一起玩一个男孩之夜。

游戏之夜的时候，马修发明了一款新游戏，但实际上是为了拷问维多利亚。而巴尼反而说了一段他自己的初恋往事，这让大伙很惊讶，为了让巴尼继续说下去，其他人得把自己最难堪的故事说出来才行。

就在泰德和维多利亚的恋情升温的同时，维多利亚却收到来自德国烘焙学校的录取通知，这让两人不知如何是好。同时，马修和莉莉同时需要花大钱买西装和新娘婚纱。

马修新工作里的同事相当惹人厌，这让马修感到很痛苦，并试图融入他们。同时，异地恋横跨大西洋的泰德认为维多利亚准备要跟他分手，因为他收到一个要谈谈的电子邮件。

因为泰德相信维多利亚准备跟他分手，这时候泰德又接到莉莉的电话说罗宾喜欢他，泰德在半夜两点后来到罗宾的家里。同时，马修、莉莉和巴尼在酒吧阻止泰德去罗宾家。

罗宾参加一个颁奖典礼，所有人都被邀请。但是有鉴于泰德和罗宾处于一个尴尬的状况，所以巴尼竟然请了一名妓女跟泰德一起去参加颁奖典礼。

莉莉和马修继续为婚礼做准备，而为了婚礼上的乐队问题，大家偷偷混入一个高中舞会想知道那个乐队有没有问题。

泰德接到相亲公司的电话说终于找到适合泰德的人选，因此泰德准备参加。同时，莉莉申请一座远在旧金山的艺术学校，对方要求面试，而莉莉就瞒着马修只身前往西海岸，但是因为半路车子出状况，才让泰德知道这个情况。同时，马修跟巴尼一起策画恶作剧。

罗宾本来要参加电视公司的露营活动，但是泰德依然不死心想要跟罗宾在一起，甚至不惜找人学跳祈雨舞祈祷天公不作美让罗宾没办法去露营。同时，马修发现莉莉通过了旧金山艺术学校的申请，这让他大为震惊。

大家试图帮助马歇尔克服莉莉的问题，尤其是当他发现一张信用卡账单时，该账单指向纽约市的一家酒店，那里列出了她的一些费用。

泰德的父母去纽约庆祝他们的周年纪念日，他得知了一个家庭秘密。 罗宾担心他们不会喜欢她。 由于不再在一起，莉莉和马歇尔试图适应他们关系的新形式。

在泰德和罗宾的第一次大战之后，巴尼试图说服泰德，成为一名建筑师很容易吸引小妞。 莉莉和罗宾在发现泰德与一个名叫安娜的女孩一见钟情后开始追踪他的踪迹。

马歇尔试图在一个非常？的世界中习惯单身。 巴尼打算一夜情不会消失。 巴尼利用莉莉摆脱了他“可怕”的处境。 莉莉找到了一个住处。

巴尼勾引马歇尔的法学教授，希望她能更宽容地评分。 莉莉在泰德的办公室找到一份工作，在那里她及时偷窃给泰德的老板一个教训。

马歇尔与莉莉分手后第一次真正约会。 泰德和巴尼不仅试图警告他这个女孩有一双疯狂的眼睛，而且莉莉决定尽一切努力找出她的情况并与他们分手。 此外，巴尼获得了一个新名字。

马歇尔和莉莉将大家拖到大西洋城私奔，他们为了克服三天的结婚证等待而与一些中国赌徒、船长和性感的新奇衬衫相遇。

泰德 和 巴尼 讨论了他们对了解女性的看法。 巴尼认为，你知道的越多，你就越有可能找到交易破坏者。 泰德想马上知道破坏交易的人，因为罗宾拒绝去商场隐瞒她的秘密。

巴尼的弟弟詹姆斯（韦恩·布雷迪饰）来访，小组中唯一一个从未见过他的人罗宾感到惊讶。 但是詹姆斯让巴尼感到惊讶，他觉得难以下咽。

泰德几乎毁了每个人的圣诞节，他仍然对莉莉充满愤怒，他称她为一个非常恶心的名字。 罗宾在巴尼感冒时会照顾他。

罗宾想告诉泰德她爱他，但她不能告诉他。 与此同时，她的妹妹来访并带来了她的男朋友，当她的妹妹说她准备失去童贞时，罗宾不知道如何反应。

泰德似乎无法赶上飞机去面试他梦寐以求的工作，他和罗宾思考着原因。 当他们想起罗宾和莉莉去寻找婚纱以及巴尼被困在地铁上时，故事向后展开。

莉莉被邀请参加一场非同寻常的百老汇戏剧，而这帮人现身支持她。泰德 和 罗宾 对各自从过去的关系中保留的东西感到厌烦。 巴尼表演他自己的戏来向莉莉证明自己的观点。

马歇尔准备好庆祝他心爱的 Fiero 达到 200,000 英里大关，但它停止了。 当这伙人坐在机械师的车库里等待听听车辆会发生什么时，他们会想起他们在车里一起度过的时光。 我们还了解了泰德如何遇见马歇尔的故事。

巴尼采取严厉措施阻止泰德搬进罗宾的公寓。与此同时，马歇尔和莉莉正在发现自己拥有公寓的起起落落。 巴尼考虑与马歇尔和莉莉同住。

罗宾参加莉莉的新娘送礼会，发现她带来的礼物不合适。 巴尼为马歇尔的单身派对聘请了一名脱衣舞娘。

考虑到鲍勃·巴克可能是他的父亲，巴尼很高兴能成为 The Price is Right 的参赛者。 马歇尔和莉莉尝试在婚礼前分开睡。

在莉莉和马歇尔的婚礼当天，一切都出问题了，令所有人惊讶的是，单身汉巴尼试图解决这一切。

这仍然是马歇尔和莉莉的大婚之日，但现在我们在招待会上。 罗宾试图讲一个故事，但总是被打断。 巴尼尽最大努力找出泰德和罗宾的秘密。

两人分手后，泰德蓄起胡子，罗宾去阿根廷散心，一起回来的还有她的新男友，这让泰德十分气愤。马修和莉莉准备为泰德合伙对付罗宾的新男友，结果他们自己反倒被阿根廷人的魅力俘获。泰德跟着巴尼重新开始把妹，并完全丧失理智，这让罗宾向他道出了实情：她交男朋友是为了减轻与泰德分手的痛楚。

Ted and Barney pretend to be visitors to New York City to pick up women. Robin is still dating Gael.

Ted's new attitude attracts women in the present and one from his past. The rest of the gang pulls together to help him make the most of the situation.

Amid sharing stories with her about how members of the gang met each other, Ted's hot new girlfriend has a reaction to the meeting that gets her a high ranking on Barney's crazy scale.

Marshall has to contemplate giving up his plan of using his law degree to help the planet when he's courted by a major firm; Lily reveals a secret to Robin that not even Marshall knows; Ted discovers a porn actor is using his name

泰德告诉孩子，他们的马修叔叔总喜欢讲他自己一生中犯下的3次大错：

幼年迫于朋辈压力，绑着纸壳做的翅膀从屋顶一跃而下；

婚礼开始前，出于压力给他自己剃了个反莫霍克发型；

婚后在房地产市场最不景气、家庭财政负债累累的时候，盲目购置一处位于纽约“多威瑟崔普拉”的公寓——马修和莉莉签完合同才意识到“多威瑟崔普拉”（DoWiSeTrePla）其实是污水处理厂下风处（Downwind of the Sewage Treatment Plant）的缩写……

Marshall awaits his bar exam results; Ted introduces his latest girlfriend to the gang, who all see the flaw that Ted has missed

Lily and Marshall have their first Thanksgiving as a married couple; Barney is tortured by the slap bet countdown clock, worrying about when the slap will be dished out.

When Barney loses his way with women, he hopes a trip to the Victoria's Secret Fall Fashion Show will help him regain his form.

Ted's upcoming date with his doctor leads the gang to give him their own examples of why dating someone you already see regularly is a bad idea.

Ted lives like there's no tomorrow during a St. Patrick's Day celebration with Barney. Lily and Marshall spend the evening at their new apartment with Robin.

泰德继续找寻他的真命天女。在他见到自己的除纹医师斯黛拉后，泰德下定决心要在10次纹身消除过程结束前把她约出来——不过似乎斯黛拉年轻的接待员艾比对他更有意思。

巴尼万千前任炮友中的一位，向他美好的性福生活伸出毒手，但他并不知道是谁。于是巴尼仿照美国大学篮球联赛的“三月疯狂”锦标赛对阵表做出自己的复仇炮友对阵表，试图和大伙一起找出被他伤害得最深的那个女人。

马修被老板训斥后当面大哭一场，于是每个人都出谋划策，帮他如何在类似情境下更好地应对老板。

罗宾给了她前前前男友第二次机会，结果最后也只是换来第二次心碎。

Barney and Marshall have a discussion about "The Bro Code" because Barney has broken it and wants advice.

巴尼找到新的男衬陪取代泰德，但那人十分羞涩，只要和女人在一起就会尴尬。泰德则发现自己的新女友斯黛拉已经5年没有性生活了。

巴尼计划假装求婚来帮艾比“夺回”泰德，但一根筋的艾比却信以为真。莉莉决定卖掉自己的画，挣钱修理他们新公寓的地板。

泰德向斯黛拉提出分手，但在一次改变人生的经历后又把话收了回去，然而斯黛拉之前并没意识到泰德其实是在和她分手……巴尼则在去医院看泰德的途中遭遇严重车祸。

泰德和斯黛拉订婚了，但他不久便意识到自己一点也不了解未婚妻。与此同时，巴尼对莉莉坦白自己爱上了罗宾。

马修对其他人口中的最佳汉堡嗤之以鼻，于是大伙决定重新找到那家让他魂牵梦绕的纽约最佳汉堡店。

When Stella's babysitter cancels, a night out turns into the gang hanging out at her place, and Ted talks up New Jersey... until he learns Stella wants him to move there after marriage.

泰德和斯黛拉将他们的婚礼日期提前，然而在他打破“没有前任”（No Exes Rule）的规矩，邀请远在日本的罗宾参加仪式后，整场婚礼开始脱离原先的计划……

为了不被刚进餐厅的斯黛拉发现，这帮人手忙脚乱地躲进餐桌底下。

正当巴尼还在庆祝怀孕是假的时候，马修和莉莉想知道他们现在要一个孩子到底合不合适。

莉莉失望地发现罗宾背地里也是一个“尖叫女孩”（Woo girl），巴尼背地里也让泰德失去为银行设计新大楼的机会。

罗宾居然和一个第一次到女方家里约会就乘机裸体的男人上床了——了解到这套荒唐的“裸男计上床法”成功率高达66.66%后，泰德和巴尼纷纷决定“以身试法”。

酒吧侍应道格邀请泰德他们去后门小巷里打架，然而打架这种事明显不是他们想象中的那样。

泰德不想让自己不大董事的妹妹来纽约时与巴尼搞上。罗宾和马修来到专门为明尼苏达人开的酒吧，却没告诉任何人她其实是个加拿大人。

泰德和罗宾发现做爱有助于缓解室友之间的矛盾，巴尼得知后十分嫉妒与气愤。马修告诉大伙，每次拿着杂志去办公楼里同一层的洗手间都让他特别难为情。

一场历史罕见的暴风雪来袭，泰德和巴尼终于有机会“开”一间自己的酒吧。马修和莉莉想要放弃他们接机时的暖心传统，最后却还是决定将两人间的这项传统延续下去。

罗宾必须在七天之内找到一份电视台的工作，不然就会失去工作签证，巴尼献殷勤般地来帮助她。同时泰德、马修和莉莉也思索着该不该修改下他们的简历。

这帮人发现巴尼假装自己有妻有儿、家庭美满来哄他妈妈开心，结果后来泰德与巴尼的“老婆”勾搭上时却扯破他的这份伪装生活。

泰德重逢大学前女友——一个每次都会迅速出轨甩掉他的婊子，马修和莉莉看到如此熟悉的恋情走向再也坐不住了。然后马修还讲了个自己忘记带裤子去上班的故事。

巴尼和马修没告诉泰德他努力设计的建筑方案已被舍弃，这帮人还绞尽脑汁地想弄清楚与罗宾一夜情的加拿大男明星到底是谁。

巴尼拼了老命试图挑战泰德的“墨塔清单”（Murtaugh List）——一份泰德觉得因年纪渐长而不宜继续进行的活动事项列表——证明他是错的。与此同时，马修帮莉莉教的孩子们训练篮球，而莉莉也想借机锻炼他如何带孩子，最后孩子们的比赛结果也出来了。

泰德打算在自家公寓里开设自己的建筑设计事务所，结果罗宾却搞上了雇来的小年轻私人助理。马修想要提高自己在公司雇员中的地位，并为此尝试许多不同的方法。

泰德打破约会中的“三日法则”，当天给自己刚遇见的辣妹发短信，但他并不知道手机屏幕背后其实是猥琐的巴尼和马修。

泰德向孩子们讲述一系列随机事件是如何将他引向他们老妈的。

在与泰德交谈过后，斯黛拉的男友托尼决定分手，并鼓动她回到泰德身边，结果却得到意料之外的答复。

当泰德正冥思苦想如何设计牛仔帽形建筑方案时，罗宾终于发现巴尼爱上自己，马修下定决心完成一件梦寐多年的挑战——从自家楼顶飞跃进隔壁公寓楼的天台花园。

正当泰德开始了他的新事业，将要遇上他的真命天女时，莉莉强迫巴尼和罗宾展开一场谈话，确定他们的关系。

泰德与他七年前同一个相亲对象相了亲，巴尼和马修发现了一个跟莉莉长得一模一样的脱衣舞女。

当罗宾担心巴尼对她不忠时，她很快发现他晚上都在和泰德一起学习如何与她约会的所有知识。

当莉莉和马歇尔意识到罗宾和巴尼是完美的双人约会朋友时，他们太努力地给人留下深刻印象，表现得太强了。

当巴尼试图说服罗宾成为美国公民时，特德和马歇尔的传奇之旅在马歇尔邀请莉莉时发生了错误。

尽管巴尼竭尽全力想成为一对完美的夫妻，但他的无所不知态度让他和罗宾陷入了麻烦，他们不得不向马歇尔和莉莉寻求关系建议。

在巴尼和罗宾的关系遭遇坎坷之后，莉莉想出了一个完美的分手计划，向罗宾的著名朋友艾伦·锡克求助。

与罗宾的恋情结束后，巴尼翻出了他的 "约炮宝典"，帮助自己重返约会现场

Barney freaks out when Marshall bequeaths a "slap bet" slap to Ted and Robin. Meanwhile, Lily's estranged father shows up for Thanksgiving.

When a perfect girl finally shows up, the gang tries everything to help Ted, while Marshall takes action when he discovers a letter written by younger himself.

When Marshall picks up smoking again, it prompts Lily, Ted and Barney, ex-smokers all, to succumb as well. Meanwhile, Robin gets a new co-anchor at her show...

When Barney debates giving up wearing suits in order to land a hot bartender, his conflicted feelings lead to an amazingly awesome musical number. Meanwhile, Ted gets one step closer to meeting the future mother of his kids.

When Barney is about to complete the perfect week - landing seven different girls in seven days - the gang roots him on in order to forget about their own miserable week.

When Lily and Marshall forget to fix up Ted on a blind date for Valentine's Day, they use one of Barney's many discarded girls to see if they may become Ted's future wife. Meanwhile, Robin's obnoxious colleague invites her to a party at his apartment

When the gang tries to convince Ted that he is being strung along by Tiffany, they reflect about relationships where each of them has been in the same situation.

When Robin confesses that she is still angry with Barney for the way he handled their break-up, she enlists the help of Anita, a self-help author who plans to beat Barney at his own game.

When Ted ruins Lily's birthday dinner celebration by bringing a date, Lily goes to great lengths to keep her out of the traditional photo she takes every year of the gang.

When Marshall gets mugged, Lily decides she wants to get a gun for protection, so Marshall comes up with a convoluted story about the mugging to deter Lily from following through.

When Ted attends his mother's wedding, he is extremely disturbed by her overly affectionate relationship with her fiancé, which forces him to think about his own life and make an impulsive decision.

When Ted and Barney jeopardize Robin's new relationship by professing their love for her, Robin realizes that she is finally over them. Meanwhile, after spending a weekend sleeping in twin beds, Marshall and Lily decide to get twin beds at home.

When Ted takes a date to see a new hit movie, "The Wedding Bride," he is shocked to learn the story is loosely based on his life, and that it was written by Tony, the man Stella left him for at the altar.

Marshall and Lily make a secret pact to start trying to have a baby if they ever finally see Barney's doppelganger. Meanwhile, Robin finally gets an offer for her dream job.

When Ted and Barney argue about who has "dibs" on a hot girl, Ted realizes that she is there with Cindy, a girl he previously dated who is also the roommate of his future wife. Meanwhile, Robin is heartbroken over Don, and Marshall can't keep quiet about his desire to start a family.

When Barney convinces the gang to help his mom move out of her home, they quickly learn that she has been very protective of Barney and lied to him about events throughout his life. Meanwhile, Ted gets upset when Robin oversells him to a blind date.

Barney uses his best womanizing tactics to try to convince Ted to design the new GNB building; Robin drunk dials Don.

When the gang teases Robin about not being a real New Yorker, she sets out to prove them wrong by racing to catch a glimpse of Woody Allen.

Ted becomes conflicted after meeting an attractive woman who is passionate about saving the landmark building being torn down for his new project.

Marshall and Lily try to figure out how to conceive a baby with the gender of their choice; Robin's perky new co-anchor irritates her.

When Zoey enrolls in Ted's class, she manipulates his students into taking her side in the fight to save the building being torn down to make room for his project. Meanwhile, Marshall and Lily spot Robin marching in the Halloween parade of shame.

When the gang goes to a black tie event at the Natural History Museum, Ted gets introduced to Zoey's husband, The Captain.

Barney's discovery of a Canadian kids show called Space Teens, that Robin appeared on as Robin Sparkles, leads the gang to get her to reach out to her co-star, Jessica Glitter.

When Ted leaves the bar early to prepare a Thanksgiving feast for his friends, the gang winds up partying all night with The Blitz, an old friend from college who has bad luck. As a result Ted is forced to spend Thanksgiving with Zoey.

When Ted's new friendship with Zoey tests the theory that single men and married women can't be friends, he invites her husband, "The Captain," to hang out with them. Meanwhile, Marshall and Robin decide to spend alone time together, and Barney and Lily possibly have a fight.

Lily and Marshall receive shocking news that has a profound impact on the gang. Ted begins his duties as best man for an old friend's wedding.

Afraid they will never get pregnant, Lily and Marshall decide to see a specialist. Robin begins her new job.

While on a trip to Minnesota, Ted and Barney try anything to make Marshall laugh. Marshall runs into an old nemesis from high school.

Barney gets emotional when he opens up to Honey about his life. Ted admits to having feelings for Zoey to the group.

Barney declares February 13th a holiday for desperate women. Marshall receives a Valentine's Day surprise from Lily. Zoey and Ted work on figuring out their relationship.

When Barney starts to have real feelings for Nora, he worries that something is wrong with his heart. Meanwhile, Robin starts dating a guy who acts a lot like a dog.

Barney meets his father and is shocked by the differences in their lives. The rest of the gang learn their "gaps"; knowledge they should have by now, but don't.

Lily and Barney react badly when Marshall finally quits his job at Goliath National Bank to take a volunteer position at an environmental organization. Meanwhile, Ted and Zoey's opposing positions on the future of the Arcadia come between them.

When Marshall and Barney argue over the destruction of the Arcadian Hotel, Robin and Lily try to mix the right combination of cocktails that will force them to make up. Meanwhile, Ted plans a romantic weekend away with Zoey.

When Ted is faced with an important decision that might affect his future with Zoey, the gang expresses their true feelings about her.

Robin and Barney bond when they intervene in Ted's relationship, and Marshall and Lily watch a ticking clock as he fears that he soon will be the victim of food poisoning.

While Barney prepares for his wedding to a mystery bride, he and Ted reminisce about Punchy’s wedding, including when Marshall and Lily announced they are having a baby. Meanwhile, Robin considers telling Barney she has feelings for him.

Marshall gets a great job offer that he fears may be scuttled by a social media background check. Ted needs a date for the Architects Ball.

Barney faces having to wear Marshall's ducky tie if he loses a bet with him. Meanwhile, Ted hopes to apologize to an ex for cheating on her.

After Robin assaults a girl who is out to ruin Barney's relationship, she is forced to begin court-mandated therapy sessions. Meanwhile, Ted gets too involved in Lily's pregnancy.

Marshall decides to step in after seeing his boss's approach to settling with a million dollar company. Ted's class trip isn't what he envisioned.

When Ted goes on a date without researching the girl on the Internet, the gang interferes, showing Kevin that they are too into each other's business. Meanwhile, Lily and Marshall come to terms with finding out the sex of their baby.

The gang begins to realize their romantic partner reminds them of one of their parents. Meanwhile, Barney and Nora's planned romantic evening is ruined by a string of bad events.

Ted finally meets his mystery girl in the Slutty Pumpkin costume. Meanwhile, Barney learns he is part Canadian, and Lily has pregnancy brain.

Barney and Robin are afraid to break the news to Nora and Kevin that they cheated with each other and want to get back together, while Ted and Marshall get stoned together at a concert.

Ted and Barney discuss making a life-changing decision together, and Robin tries to discourage Marshall and Lily from moving to Long Island.

Robin receives bad news and decides to hide it from the gang. Marshall hangs Christmas decorations in his house in the suburbs with some help from his neighbor.

After celebrating New Year's Eve, Marshall visits his father's graveside to carry on their tradition of tailgating. Meanwhile, Barney and Ted open a bar called "Puzzles," and Robin is forced to fill in for an inebriated news anchor.

Lily and Marshall officially move to the suburbs and realize that Lily's bossy father refuses to move out of their house. Meanwhile, the gang adjusts to them moving by going to a strip club.

五分钟可以使一场成功的派对变成灾难！在Lily和Marshall的搬家派对上，Barney勾搭到一个不错的靓女，Ted和Robin争论对方性格的缺点，Marshall的领导想让其排队完后加班，而Lily的父亲想做一个养蜂人，看似正常的派对矛盾一触即发。

一个叫Quinn的女孩能识辨出所有Barney的花招；Barney和Ted踏上醉酒列车，寻找艳遇；Marshall和Lily争论谁更不计较；Kevin向Robin正式求婚……

When Robin breaks up with Kevin, Ted confesses his feelings to her. Meanwhile, Barney is on a mission to find something private of Marshall and Lily’s.

尽管Barney知道了Quinn是脱衣舞娘，他仍试着追求；Robin搬到了长岛和Marshall、Lily一起生活；Ted 在Robin搬走后决定改变Robin的屋子

The gang tries to break up Barney and Quinn after learning they plan on moving in together, leaving Robin and Ted to fight over who deserves to sublet her apartment.

Ted, Marshall and Barney embark on another "trilogy time", where they get together every three years to watch the "Star Wars" trilogy and envision what their lives will be like in another three years. Meanwhile Barney and Quinn move in together.

Although Ted is happy with living alone at his new apartment, Barney tries to convince him about going out every night. Lily has a naughty dream about someone other than Marshall. Robin finally starts her stint as a news anchor at World Wide News.

巴尼和马修远在拉斯维加斯嗨的时候，莉莉打来电话说她可能快生了

Ted is conflicted when Victoria approaches him on her wedding day and asks him to elope. Meanwhile, Barney and Quinn are arrested by airport security while on the way to Hawaii when Barney refuses to open a box they are travelling with.

Robin’s anxiety on her wedding day to Barney prompts Ted to recount the time he insisted on leaving Victoria’s jilted fiancé a note before they drove off into the sunset together.

When Barney designs an extensive pre-nup, the guys take note and propose their own relationship amendments to their significant others. Meanwhile, Quinn is outraged and draws up a pre-nup of her own, which causes friction between the sexes.

莉莉和马修没办法找到合适的保姆，他们发现罪魁祸首竟然是巴尼……巴尼对待女人的方式方法已经对他们造成潜移默化的影响，而这说不定是巴尼精心策划的一个阴谋！与此同时，罗宾和泰德都认为自己对现在的感情很认真，甚至为谁更认真的问题发生争吵。

莉莉和马修开始为马文寻找合适的教父母。他们让身边的这些朋友逐个接受考验，以决定他们当中谁最合适。

分手季节尚未结束，这次轮到了泰德和维多利亚。不过在那之前，泰德和维多利亚不得不思考他们之间复杂的、长期的、反反复复的关系究竟要向何方发展。另一方面，和奎茵分手的巴尼选择一只狗作为自己的伴侣，罗宾不免对他有些担心。

罗宾不敢和尼克分手，巴尼决定自己来掌控一切。与此同时，莉莉和马修渴望能有私密时间。不……不是渴望，是绝望！

马修推荐当年法学院的同学布拉德来他公司工作，但是他面试失败，留下马修一人面对他的老板。同时，罗宾帮助巴尼打理他重回脱衣舞俱乐部的事项。

马修曲折地赢下蛙湖案，并打动布拉德弃恶从善。在布拉德的鼓励下，马修申请成为纽约州法官。巴尼决心放弃罗宾，只做好朋友。

罗宾决定把巴尼追回来，无论发生什么。与此同时，泰德当起马文的保姆，导致马修和莉莉意识到泰德是用马文来替代他的另一个孩子——GNB大楼。

Barney's developing relationship with Patrice leaves Robin questioning his motives. Marshall's widowed mother gets back into the dating pool, but he thinks she may be swimming with a shark.

Robin takes steps to have Patrice fired from WWN, while Marshall puts a jinx on Barney. Later, Ted invites his architecture professor to the dedication of the GNB building, and Marshall and Lily bump into an oddball acquaintance from college.

When Robin learns that Barney never asked her father’s permission before proposing, she insists that he seek his approval before announcing their engagement. Meanwhile, Ted keeps his feelings concealed by throwing himself into planning their wedding.

When Ted receives an unexpected call from The Captain, the gang reminisced about their last awkward encounter with him.

“船长”向莉莉提供了一份在罗马的工作机会，她会接受吗？同时泰德想要一睹巴尼与罗宾婚礼策划人的火辣身材。

泰德和马修把巴尼的告别单身派对变成他一生中最糟糕的夜晚，或者这正是他们想要让巴尼感悟的？

As the gang prepares to go to Robin and Barney’s wedding, Ted invites Lily to see the house he's finally finished fixing up. Meanwhile, Robin and Barney’s night of relaxation is ruined by an obnoxious couple, and Marshall takes the baby on a last-minute trip to Minnesota to see his family.

莉莉在去法汉普顿的火车上遇见了一个有趣的人，而马修被踢下了前往纽约的飞机，巴尼和罗宾发现他们似乎有亲缘关系，而泰德准备给罗宾送上一份大礼。

Marshall asks Barney and Ted for help figuring out where Lily went in the middle of the night during their argument.

With only a half an hour left before the wedding, Robin and Barney panic; Lily and Marshall rewrite their wedding vows.

Ted finally finishes telling his kids the story of how he met their mother.

Ted finally finishes telling his kids the story of how he met their mother.