After a night of celebrating their beating the Fates, the Legends quickly discover that Sara is missing. Ava sends Rory and Behrad to follow a lead on who can possibly help them find Sara, while Constantine tries to work his magic. Meanwhile, Sara does all she can to try to escape but is shocked to learn who one of her kidnappers turns out to be.

The Legends find themselves tracking an Alien in 1950s San Bernadino and having to figure out what is making the town go on a feeding frenzy. Meanwhile, after crash landing, Sara tries to figure out a plan and runs into none other than Amelia Earhart.

The Legends find themselves in 2045 trying to defeat an Alien warrior which leaves Zari no choice but to enter a popular singing competition. Sara finds herself struggling after being attacked but someone familiar helps her to keep searching for refuge. Meanwhile, Zari and Constantine have a much-needed conversation with each other.

The Legends are shocked when Rory takes command and manages to find the location of an important Alien, but he also lands them in the middle of the Cuban Missile Crisis. The team makes the decision to split up, leaving Nate and Zari to work together to stop a nuclear disaster alongside JFK while Behrad tries to leverage his newfound friendship to stop Castro from starting a war. Meanwhile, with Spooner's help, Rory makes an unlikely deal that could lead him on a solo mission to find Sara.

With Astra now a mortal, she finds it hard to adapt to the real world with no guidance from Constantine. Frustrated and lonely, Astra makes a new friend who promises to help her, but her eagerness for the easy way out could have some real repercussions for those closest to her. Meanwhile, Sara meets the person responsible for her kidnapping and tries to convince others to help her escape.

Mick takes the Waverider and Kayla to try and find Sara, but these enemies find themselves needing each other to survive after landing on the possible planet Sara is being held captive. After a report of an Alien attack, the Legends return to their new headquarters where both Spooner and Astra try to connect to the Alien. Meanwhile, Sara devises a plan to escape by using her charm to win over Bishop.

With Ava a wreck, the Legends make a last-ditch effort to keep Sara from being abducted in the first place, even knowing that it will alter the timeline. Sara grapples with a discovery about herself and is shocked when Rory finds her on the mystery planet. Meanwhile, Spooner envisions what her life would be like if she hadn't joined the Legends.

With everyone finally back together, the Legends find themselves looking to Nate to keep everything calm while in the old West on a mission to find an alien. After trying to keep things normal, Sara reveals her secret to Ava and the team, leaving them all shocked. Constantine looks to Gary who might have the answer to his problem. Spooner and Astra are forced to work together despite their clashing personalities which ultimately helps push them to hone their powers.

Behrad is disappointed because the Legends have forgotten his birthday. Meanwhile, Rory's behavior has been a little off, so Sara and Gary become determined to find out what happened, but Rory gets some unexpected news from his daughter, Lita.

With Constantine obsessed with getting his powers back, he convinces Spooner to join him on the quest to find the Fountain of Imperium. After they find themselves at the end of the Spanish Civil War, Spooner makes an unexpected bond with someone she feels the need to protect. Meanwhile, Sara and Lita are concerned about Rory's health, so they try to convince him to take it seriously.

When the Legends track down another Alien pod, they find a device that transports them to a cosmic bowling alley. Spooner makes a bet against the reigning champs for a ride back to the Waverider, but not everyone is happy about the plan when they realize what they are up against. Elsewhere, Nate plans a romantic date for him and Zari, but nothing goes as planned. Meanwhile, Behrad and Gary try to distract Ava from what's going on with wedding planning.

The Legends are ready to get back home, but after Constantine overloaded Gideon, they are going to have to go the old fashion way to preserve the ships energy. Trying to entertain themselves, tensions start to grow high, so Gary suggests playing a murder mystery game to pass the time. Meanwhile, Rory and Gary deal with an unexpected guest that arrives on the Waverider.

With the Legends on high alert with their unwanted guest in their custody, Ava is tasked with the interrogation while Nate and Sara watch. Rory is struggling with the terrible pain in his head and Gary tries to help to manage it the best he can. Meanwhile, Zari enlists Astra and Spooner's help to figure what is going on with Constantine.

When Astra and Spooner find themselves as stowaways, they learn that Constantine is still chasing the Fountain of Imperium and find themselves in 1920s Texas. With the rest of the Legends stranded, they come up with a plan to get help by using Rory as bait that will also help reunite him with something that is special to him. Meanwhile, Spooner learns some information about her past that she wasn't expecting.

When Sara realizes Bishop's plan, Ava convinces Sara to allow the Legends to make exception to the rules to help fight back. Behrad comes up with an interesting plan, that allows Sara to connect with an old friend. Meanwhile, amidst a battle Sara and Ava make an important decision but need the help of the team to pull it off.

After defeating the aliens and saving Earth, the Legends find themselves stranded in 1925 Odessa, Texas with a destroyed Waverider. Wanting to help fix things, Astra tries using her powers, which creates unwanted attention from the town and that of the new Director of the Bureau of Investigation, J. Edgar Hoover. Realizing they need to escape, Sara and Ava create a distraction by going on a crime spree with Hoover hot on their tails. Meanwhile, Zari is finding it hard to get over Constantine, so Behrad suggests the only thing he knows that can help.

While the Legends contemplate how to get to New York City, Behrad discovers Hoover has train tickets to DC and Sara and Ava come up with a plan. With Zari stuck without the internet, she is forced to take a digital detox and becomes obsessed with figuring out who blew up the Waverider. Meanwhile, Astra and Spooner have stayed behind in Texas and are dealing with the aftermath of Astra's special spell.

With Astra, Spooner and a now-human Gideon trying to save the Legends, Gideon becomes overwhelmed by her new human choices sending her into a catatonic state. Astra and Spooner combine their powers to enter Gideon's mindscape and discover that a virus is trying to erase all of Gideon's memories. Acting fast, they devise a plan to defeat the virus before it's too late. Meanwhile, the Legends are about to go up against a powerful new foe.

When the Legends arrive in Chicago, they come across a speakeasy that caters to a diverse crowd, however their presence results in upsetting a mob who in turn burn down the club. Wanting to make things right, Zari demands they help to fix the club by throwing a party, with a special performance by The Bullet Blondes, to help raise money to rebuild it. Coincidentally, Astra, Spooner and Gideon are also in Chicago and feel compelled to help a female musician sever ties to the mob, while also trying to reach the Legends.

After Sara, Ava, Behrad and Gary arrive in New York City, they track down Dr. Gwyn Davies, who isn't the scientist they expected. Astra, Spooner, and Gideon are still trying to stop the Legends from using the time machine, but they run into some more setbacks along the way. Meanwhile, in the pocket dimension Nate and Zari work together on the Hoover situation as well how to make their future together work.

When the Legends and Gwyn finally time travel, the time machine goes haywire leaving them stranded in a lush forest with no idea when or where they are. Seeing that Sara and Ava are noticeably stressed, Nate takes over and gives everyone tasks to set up camp to keep everyone occupied. Meanwhile, unbeknownst to the Legends, someone keeps trying to destroy the anomalies that keep popping up which could create bigger ripples throughout history.

When the Legends crash land in 1940s Seattle, they find themselves right in the middle of WWII with a surprise guest. Needing replacement parts to fix the time machine, Sara, Ava, Astra, Spooner and Gideon find themselves working in different sections of an airplane factory alongside "Rosies." With Astra frustrated with inequality in the workforce, she takes matters into her own hands. Meanwhile, Behrad offers to play host and help teach Nate about Persian culture and etiquette.

Sara starts to realize her team is making questionable choices when it comes to the timeline. Trying to figure out who is behind everything, Sara discovers some harsh truths.

When Gideon jumps the time machine into the Manor Dimension, which lands in Hell, Astra realizes that a damned 90's reality show crew sneaks into the manor. With the reality show crew causing emotions to spike, Sara and Ava share their true feelings about their roles as Co-Captains. Behrad seeks advice about Astra from Nate and Zari but Behrad finds that his past is put on display instead.

With the Legends tired of being chased by an evil A.I. and her robo-soliders, Sara decides to create an aberration that will allow the team to take back the Evil Waverider. However, they find themselves in a bar for time-travelers and quickly learn that this "fixed point" is popular with time-travelers, leaving Sara questioning her odds at winning. With Behrad and Astra growing closer, Zari and Spooner are forced to awkwardly interact with each other as the rest of the Legends are paired up on the mission. Meanwhile, Ava hears Gwyn's plan to save his boyfriend, and is forced to remind him of the consequences in he succeeds.

With some help from an unexpected person, the Legends break a fixed point, creating an aberration that will attract the Evil Waverider. The Legends are soon shocked at who has been hunting them and Sara tries to negotiate which doesn't go as planned. Seemingly out of options, Gwyn rises to the occasion by using his military experience and hatches a stealth plan. Meanwhile, Gary helps Astra realize what she is side lining Gideon from the mission.

With Gideon hurt, the Legends only have one way to save her. Once Evil Gideon is active, she continues to try to destroy the Legends, until Gideon reminds her of a certain protocol she must follow. Trying to help, Gideon negotiates a deal to save the Legends but to get them to agree, she breaks a major rule. Meanwhile, the Legends come up with another plan that could potentially solve all their problems.

The Legends are all disappointed and hurt by Gideon's actions, but Gideon is horrified when AI Gideon tells her about Gary. Itching to get back to doing what they love best, they realize that Gwyn has broken the treaty and must find him. Meanwhile, Sara keeps an important secret from Ava because she doesn't know how she will react.