在結婚的前兩天，道格（賈斯丁巴森 飾）跟三位伴郎，也就是他的兩個麻吉菲爾和史都（布萊德利古柏和艾德赫姆斯 飾）及未來的小舅子（查克葛里芬納奇 飾），四人開車到拉斯維加斯，打算展開他們畢生難忘的通宵狂歡派對。結果，三位伴郎隔天起來頭痛欲裂，但卻發現記不起任何事。他們的高檔飯店套房變得淩亂不堪，而且新郎竟然不見了！他們三人毫無頭緒發生什麼事，不過所剩時間不多，他們必須設法回想前晚幹了什麼蠢事，弄懂到底犯了哪些錯，以求能及時找到道格，使他能夠趕回洛杉磯參加自己的婚禮。然而，他們發現的事情愈多，他們愈瞭解他們惹上多大的麻煩。
吉姆打算與蜜雪兒求婚，而吉姆將舉辦一場屬於他與蜜雪兒的夢幻婚禮。然而，史蒂夫·史戴弗勒絕對不會讓這場婚禮如此順利進行的，吉姆及好友該如何替他善後，同時又能將夢幻婚禮順利進行呢？
繼上一集在賭城度過令人永生難忘的單身狂歡派對後，這次輪到史都（艾德赫姆斯飾）要在泰國曼谷舉辦婚禮，有了上一次的教訓後，史都選擇了十分安全且低調的婚前早午宴方式慶祝。 老愛出餿主意的菲爾(布萊德利古柏飾) 提議在史都結婚前他們這群人晚上一起喝個一杯，沒想到史都的未婚妻蘿倫不但支持，還說服他們帶著泰迪(李淳飾)前往放鬆一下。
沒想到說好的「喝一杯」就成為他們的最後記憶…，而這次居然在陌生的地點醒來，直到發現泰迪的斷指而他卻失蹤時，才警覺到這一切又再度失控了！這回換成史都岳父和岳母最疼愛的小兒子泰迪失蹤，婚事一直以來岳父和岳母就被反對的史都勢必要找到泰迪才能回去結婚，然而，到底昨晚又發生了什麼事？
世事難預料，節外生枝的計畫永遠不如預期，賭城不堪往事不再回首，結果到了曼谷所發生的事情失控且誇張到令人無法想像！
邁爾斯（保羅‧吉亞瑪提 Paul Giamatti 飾）和傑克（托馬斯‧哈登‧丘奇 Thomas Haden Church 飾）是老朋友了，看著傑克即將踏入婚姻殿堂，邁爾斯更加感歎起自己失敗的生活：婚姻失敗、作家夢遙不可及、幹著無聊枯燥的職業、不再年輕的歲數。邁爾斯對葡萄酒的研究頗為深厚，於是兩個人決定前往加州的葡萄酒生產基地狂歡一次，如果遇上一夜情當然是最好不過了。
果然二人在酒香濃郁的加州遇上了女招待和她的亞裔朋友，邁爾斯和傑克的艷遇讓兩人都興奮不已。然而接下來的事情卻大掃興致。他們的狂歡計劃充滿了障礙。
四個居住在全國各地的60多歲的老友為其中最後一位結束單身的好友比利舉辦單身派對，而來到拉斯維加斯準備狂歡一次。然而比利和派迪之間卻存在著矛盾，原來在派迪的妻子去世時比利沒有出席葬禮，而她年輕時是兩人共同追求的對象。由於比利的結婚對象只有30多歲，在派迪發現比利對這裡的駐唱女歌手黛安娜有好感後，建議比利要做好人生選擇，最終比利與黛安娜走到了一起
即將踏進愛情墳墓的你，將如何籌劃告別單身儀式？前往牛郎店觀看猛男秀？還是在飯店裡召開瘋狂派對？或是什麼都不做，呆坐在家裡，靜候這一天的來臨？
喜劇小生湯姆漢克在劇中扮演駕駛娃娃車的司機瑞克，面對婚禮即將來臨，他的死黨兼好友們決定為他舉辦一個瘋狂派對，以告別他的單身生活。
但由於這項派對中不免要依照習俗，聘請妓女來共樂，知道這項傳統的黛比，便與瑞克約法三章，絕不在派對當天與其他女子廝混。左右為難的瑞克，該如何讓事件圓滿落幕呢？兩全其美呢？面對死對頭科爾的阻擾，他又該如何機智應對呢？
Kyle Fisher has one last night to celebrate life as a single man before marrying Laura, so he sets out to Vegas with four of his best buddies. But a drug and alcohol filled night on the town with a stripper who goes all the way, turns into a cold night in the desert with shovels when the stripper goes all the way into a body bag after dying in their bathroom. And that's just the first of the bodies to pile up before Kyle can walk down the aisle...
這群死黨中最後一位單身漢將可獲得一大筆錢。在只剩兩人的情況下，其中一人為了讓競爭對手結婚而煞費苦心。
Very much in love, Neil's wedding plans are sabotaged, beginning when he is abandoned, naked, on a Scottish island. A road trip ensues, with Neil encountering many obstacles as he makes his way to London for what he believes is to be his wedding day. Or is it?
Five British friends head to the Andes for a stag weekend. Of course, they’re unprepared, get lost – and inevitably ignore all warnings about the sinister local legend of the ‘The Hunter’.
Quite a bit can happen over the course of a single day in L.A., and when smooth-talking scam artist Johnny decides to throw a bachelor party for his best friend Bill the events of the day take a bizarre turn. As the festivities get underway, the appearance of a transvestite prostitute, a trigger-happy ex-con, and a notorious porn king signal that this isn't going to be a typical night out.
A group of girls taking a trip to celebrate a bachelorette party in which they will rediscover themselves.
An accidental death at a bachelor party spurs a night of shooting, kidnapping and murder in the host's home.
Ken Andrews has been the orchestrator of the hazing pranks at all of his buddies' stags - elaborate, hilarious pranks that have left many emotional scars and a few physical ones. And now today is Ken's stag! He nervously awaits the fate that his pals surely have in store for him, comforted only by the knowledge that Carl will be there to watch his back. That is, so long as Carl can extract himself from the Hollywood celebrity, Veronica. Ken will soon discover that payback is worse than he could ever imagine.
Brian and Zack take off for a bachelor blowout in the City of Sin to celebrate Brian's last days as a man free of married life. Las Vegas offers them choices in every frame of desire and fulfillment, from erotic dancers and strippers to the bold and beautiful women who come looking for a good time. Little does Brian realize that his fiancée and her maid of honor are also looking for a little premarriage tension release, and are finding it in equally dishonorable ways.
The events that occur the night of a bachelor party are often shrouded in secrecy--until now! The night before Claire and Brad's wedding, Claire sends her friend Tori along to make sure Brad behaves himself. But before the evening is over, a stripper will make off with the cash; a loan shark will have to be paid off; the maid of honor will be kidnapped; and the groom will be held hostage by a sexy dominatrix. But the real question is: will they make it to the church on time?
While out on a bachelor's party, three mid-twenties college buddies come across a crime scene and three cases of premium grade heroin. Their stories are interwoven and told in flashback as they are interviewed by Narcotics Detective Mark Harrison and his officers. Each interrogation unknowingly pushes them deeper and deeper into a world they clearly know nothing about.
Linda's out on her hen night, her fiance is out on his stag night. Linda is having major doubts about getting married, when both groups arrive at a club, to find the band fronted by her ex-boyfriend—and the love of her life—Peter. Linda has to decide: Does she stay and settle down, like her friends want her to, or does she chuck it all in and run away with Peter?
Best man Pob's secret plan for a surprise stag do at a plush countryside brothel is thrown into jeopardy when the bride-to-be insists that they take her overbearing right wing father, The Judge, along for what she believes is a harmless camping trip. Now the lads must find a way to ditch the no nonsense tyrant and make it t the 'Cock's Inn' by midnight or miss out on the Party of a lifetime.
Groom-to-be Brandon is content to sit at home the night before his wedding, but his best friend Joshua won't allow that. The friends travel all over town, discussing the motivation to make a decision that is beyond right or wrong, and learning how one man's clear choice is another man's struggle with temptation.