With Constantine missing, the Legends struggle to find a way to track him. When Sara hesitates to make a tough call, Rory steps up creating a wedge in the team. Meanwhile, Ava gives Gary the responsibility of handling the Bureau performance reviews for all the Agents.
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.
With darkness on the rise in 2019, the team realizes that a new host of problems have risen as they have been cleaning up history. Sara tries to save Ava from a fate worse than death while battling her own demons. Nora and Constantine, work together to take down a powerful demon. Meanwhile, Zari gets unsolicited advice from Mona, Charlie and even Rory.
When Mona discovers that her favorite author, Jane Austen, might be at the epicenter of a magical alert, Mona, Sara, Charlie and Zari find themselves in 1809. With Nate still dealing with family issues, Constantine and Rory perform a séance and receive a message from the other world that rocks Constantine to his core. Meanwhile, Ray and Nora are forced into close quarters.
When Hank commandeers the Waverider in 1973, the Legends find themselves on the run in an RV after kidnapping the President who is only able to tell the truth. With the help of Constantine, they discover the reason that none of them can lie making for an uncomfortable family road trip. Meanwhile, Nate and Zari, with the help of Nora and Gary, work together to find out what Hank is really up to.
When the Legends hear that Mona has let a fugitive go, they must head to 1961 Mexico City to clean up her mess. Mona tries to convince the Legends and the Bureau that the people responsible for releasing the fugitive were some mysterious Men in Black and not her. With no evidence to back up her theory, the Legends must decide if they should trust her and go against the Bureau. Meanwhile, Nate and Zari go on a recon mission to find out what Hank might be hiding from everyone.
With Rory and Ava at odds, Sara tries to come up with a way for them to get along, but all is put on hold when a new magical creature attacks the Legends. Constantine is forced to confront his tragic past but it could have devastating consequences for the rest of the team. Meanwhile, Mona has a crush on someone she works with and gets some advice from Nate.
When Hank Heywood confronts Ava about the spending habits of the Legends, Nate steps in to try and smooth things over by inviting Hank on to the Waverider. The Legends then show Hank what they do by visiting 1920s Paris, trying to capture the newest Fugitive. Meanwhile, Mona is trying to make a good impression with Ava, but her over eagerness gets her and Ava stuck in a cell instead.
A new fugitive is on the loose in 1951 Tokyo and Sara, Zari, Rory and Charlie try to capture it. As Constantine struggles to recover, Ray knows that magic might be the only thing that can save him but must look outside the team for help. Meanwhile, Ava joins Nate and his family for an unconventional Thanksgiving dinner.