After drinking from Chalice, the Legends have immortality for 24 hours, which gives them time get to the Waverider and use the Loom of Fate. However, they quickly discover that the sisters have stolen the Waverider and they are stuck at Constantine’s house in the middle of nowhere in London during a Zombie Apocalypse. Meanwhile, Gary is left on the ship and once he discovers what is going on, he takes something important to the sisters.

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.

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.

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.