When Sara receives a distress call from their "befriended" agent at the Time Bureau, she learns that they have been tasked with going to the future to capture a rogue time traveler. Unfortunately, the Legends make things worse by trying to protect an outlaw named Zari, to hopefully lure in the time traveling assassin. Meanwhile, Stein tries to diagnose Amaya's condition, but Nate discovers an unusual treatment that Amaya begrudgingly agrees to.

Rattled by recent events, the Legends dive into work which finds them investigating an Anachronism in a Viking settlement in the New World. The Legends realize that the Norsemen are worshiping an artifact as their god and are surprised by the artifact's origin. For the first time, Sara is worried that they might need back up when Damien Darhk shows up. Meanwhile, Jax finds a loophole that could potentially change history, but it is a risk he is willing to take.

When Damien and Nora Darhrk take Ray hostage they force him to try and fix the Fire Totem, but Ray tries to use the power struggle between them to his advantage. Ray and Nora find themselves working together in 1960s East Germany in order to fix the totem, but soon come face to face with a younger and deadlier version of Damien Dahrk. Meanwhile, Sara seems to be taking positive steps in her personal life.

With the timeline barely stable, the Legends must tackle two anachronisms at the same time to try and keep Mallus at bay. Sara and Rip team up to stop Grodd from going after a particular target leaving Nate and Wally to stop Amaya from changing her future. Meanwhile, the Legends think they have found a way to destroy Mallus, but they will have to create an uneasy alliance with one of their enemies.

When the Legends discover a fugitive is hiding in 1970’s London, they realize he is part of a gang that is targeting the British Monarchy. Trying to stop the gang, they realize someone from the Legends must infiltrate them. Surprising everyone, Ray is the one to gain their trust after he is put through a series of tests with help from Sara and Rory. Meanwhile, Gary shows Nate the ropes at the Time Bureau, but it turns out to be anything other than an ordinary day at the office.

After Constantine breaks the cardinal Legend rule—you can’t change the past—he, along with Charlie and Zari try to deal with the ramifications without telling the rest of the Legends. Even though Zari encourages them to just fix the problem, Constantine and Charlie are determined to find another way, but only continue to make things worse.

While Ray is worried about Nora, he is suddenly faced with his own problem that forces him to do the unthinkable. Nate and Zari are stuck in an awkward limbo, so Sara devises a plan to send them on an easy mission together. Meanwhile, Charlie and Rory are approached with a lucrative offer that could upend their lives.

Sara, Ray and Mick are shocked to discover that the Legends have become famous. The Legends discover that their new problem is Rasputin. Constantine thinks he knows the reason for new time blips and informs the team that it won't be easy to defeat.

Ray plans a date night for him and Nora, but all goes awry when an Encore shows up making the team think on their feet and create a lie to keep the Encore at bay. While trying to fool the Encore, Ava learns what Sara was really doing while she was away and confronts her. Charlie and Constantine make a deal to work together, which will benefit both of them. Meanwhile, Rory is upset when he gets negative comments about his book, so Zari helps track down who the critic is, and Rory gets more than he bargained for.

Everyone is eager to use the Loom of Fate, but the team must decide who they want to bring back first leaving Charlie to make a tough choice. Sara struggles to understand what has happened to her and with the help of Constantine and Ava, they try to figure out how to help her. Meanwhile, Rory has a guest on the ship that he is trying to impress.

After Charlie does the one thing that goes against her nature when it comes to her sisters, she tries to protect the Legends by scattering them in different television shows. Of course, in true Legends style some can’t just be blissfully ignorant and happy but figure out a way to end up messing with the system.

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.

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.

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.

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.

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.