Plot

Evil Gideon continues to try to destroy the Legends; trying to help, Gideon negotiates a deal, but she breaks a major rule; the Legends come up with another plan that could potentially solve all of their problems.

Gideon confronts Evil Gideon and come up a compromise that will keep Evil Gideon from trying to kill the Legends. However, for the plan to succeed, the Legends will have to give up being heroes and fulfill their fondest dreams...except for Gwyn, who still loses Alun.—Gislef

The Legends take the wounded Gideon to the medbay, and figure they need to turn on the computer Gideon to heal their Gideon. They go to the server room and plug Evil Gideon back in and the power comes up in the medbay. Sarah takes the ship out but discovers that she can't control the ship because the Robo Legends changed the wiring.

Evil Gideon comes on line and opens the outer doors, and says that they've saved Gideon but doomed their team. Astra tries to invoke Protocol 276 so save the Gideon system, and tells Evil Gideon that Gideon is the one injured. Evil Gideon restores the air and heals Gideon, and wonders how it can be human so Astra explains that she used magic. The Legends point out that Evil Gideon can't kill Gideon or them, since they're staying around Gideon. Evil Gideon seals the server room off, and Zari points out that she didn't restore power in the lab so it's a safe room from Evil Gideon.

Gideon escorts the Legends to the lab, then goes to the bridge and tells Evil Gideon that they should talk. The Legends in the lab wonders what the Gideons are talking about, and share a bag of peanut. Astra uses magic to duplicate the bags, and Gideon comes in and says that Evil Gideon is letting them go home, because they're all retiring.

The Legends wonder what Gideon means, and she says that she'll go home while Evil Gideon monitors the timeline. Spooner figures Evil Gideon will eventually send evil robots after them, Gary and Gideon go to the bridge and tell Evil Gideon that the Legends don't want to retire, and figure Evil Gideon will try to kill them. The AI admits that she will, and Gary suggests Evil Gideon show the Legends their futures where they're alive, proving it doesn't kill them. Evil Gideon warns that revealing someone's future could cause irreparable damage to the timeline, but Gideon points out that Evil Gideon being stuck in the temporal zone forever could be causing more damage.

In the lab, the Legends discuss a plan and Ava has a courier. Behrad remembers seeing a charging station in the armory, and Sarah figures they have a plan. They figure that Spooner is small enough to get through the vents to the armory. Gwyn draws out a map of the plans, and Behrad tells Spooner that she has to stay silent to bypass Evil Gideon's surveillance mikes.

Gary and Gideon come in and say that they have a plan, and Evil Gideon will show them their future to prove it doesn't kill them. Sarah says that they'll give it a slot and once Gideon and Gary leave, Sarah figures that Evil Gideon will be distracted so they can pull off their plan.

Gideon and Gary take Zari to the bridge, and Evil Gideon shows her Zari her future of winning the Influencer of the Decade award and giving her acceptance speech. Gideon points out that Zarihas made $45 million as a fashion designer.

Behrad gives Spooner a video looper, and she goes through the ducts to the armory.

Gideon and Gary show Zari a magazine cover proclaiming her success, and Zari goes to the lab and shows Ava the magazine. She doesn't have the Totem in the future, and realizes that she retired from being a hero.

Behrad goes to the bridge and Evil Gideon shows him his future where he is a singer on a TV. Then Evil Gideon shows the other Legends their futures. They all have happy futures, except Gwyn. Alun dies, and Sarah and Ava have a daughter. Astra becomes a politician, and Gideon tells Gwyn that he can go back to Wales but he realizes he will be alone. Gideon shows Behrad the folk album that he makes, and says that the children love it. She has campaign badge for Astra, and the book that Nate writes about history.

Back in the lab, the Legends discuss what they saw and Ava points out that they agreed to accept their futures, they would be letting a computer dictate their futures. Meanwhile, Spooner gets above the armory and uses the looping device. She can't get the grille open, and warns the others via comms that she'll need time. Astra uses a spell to assume Spooner's form and goes to the bridge.

Spooner drops into the armory, trying to keep as quiet as possible.

Gideon tells "Spooner" that she goes back to 1925 and starts a clinic with her mother, Gloria. When Gideon admits that Spooner will be separated from her friends, "Spooner" clearly isn't enthused.

When Spooner puts the courier in the charger, it sets of an alarm. Evil Gideon shuts the armory door before Astra and Gideon can get in, and opens the outer hatch. Astra threatens to blast the door open so they'll be sucked out, including Gideon. Evil Gideon realizes that she can't kill Spooner, and closes the hatch.

Gideon calls a meeting and says that she thought they all wanted to go home. Sarah and Ava argue, and Gideon says that they have to compromise. Gideon realizes that she has to be Evil Gideon's captain, and says that per Time Master's protocol, there always has to be one captain and one AI.

The Legends discuss Gideon's offer, figuring it has to be a team decision. They differ on whether they should accept the plan or not, and Gary points out that they can trust Gideon. Zari wonders if they're going to stop being Legends, and Sarah figures that for the timeline they have to stop.

Gideon swears the Time Masters oath, and the Legends celebrate their retirement with a party, and they sign their contracts. Astra glares at her contract, and tells Spooner that there's no point in making friends if they can't see them. Spooner has the key to the manor, and Astra magically duplicates it so they can all have a key and hang out in the manor without breaking their contracts. When Astra considers herself an apprentice, Spooner says that she's a full-fledged witch and hands out the keys.

Astra gives a key to Gideon and says that Gideon can visit them whenever she wants, and tells Gideon that she's proud of her. Sarah and Ava go for a work, and discuss starting a family. Sarah figures they get to build a life together, and they kiss.

Gary tells Gideon that she is the most amazing person he's known, and says that he loves her. Gideon asks Gary to stay with her, and being a computer makes her a better captain... and being with Gary makes her a better person.

Astra and Behrad discuss their relationship, and Behrad says that he's prepared a perfect date for them. They kiss. Meanwhile, Zari tells Nate that she hoped she'd have more time to be a hero. She admits that it's hard living in the other Zari's shadow, and she matter. Nate assures Zari that she matter, and she's a champion of being the right thing. He figures that his legacy is the life he gets to have with the other Zari, and assures Zari that she makes a difference in her own way. Zari wishes she knew what that was and walks away.

Gwyn tells Ava that he won't have Alun, but they'll see each other again in the next life. When he walks away, Ava asks Zari to help her with a surprise she has for a team. Gideon sees them go, and Ava tells Zari that Gwyn will live his life in misery. Zari says that she can help and asks Ava to let her.

Gideon figures that the Legends are up to something, and orders Evil Gideon to prepare the jump ship. She orders the AI not to kill the Legends while she's gone.

Ava and Zari figure they'll charge the courier, jump to 1925, and Zari will create a dust storm to conceal Ava taking Alun from the enemy attack and saving him so he can be with Gwyn. Zari has an idea to go to the bathroom where there's a hair dryer, and use its charger to charge the courier. Gwyn comes in and Ava tells him their plan. He thanks them but says that the risk is too late and he won't let them lose their future. He says that they've him.

Gideon arrives with Alun, and Gwyn talks to his lover privately. Gwyn says that their squad died and Alun along with them, but he invented time travel to save him. Alun wonders why Gwyn did that, and Gwyn says that he couldn't bear to live in a world without. Alun kisses him and then apologizes, saying it was foolish of him to think that was what Gwyn wanted. Gwyn says that he always wanted that, where they can be themselves. Alun says that he will always be himself, and Gwyn is an odd, beautiful man.

Gwyn and Alun go to the others, who are discussing when they can get together. Gideon says that she will miss all of them, and they take a group photo of all of them. Eventually, only Gideon and Gary are left as the others leave for their futures.

Later, Gary takes Gideon to a room he's made up to look like Paris, where they can have dinner. Gideon lies about not knowing what the French food, and admits that she lied so she wouldn't make him feel stupid. When Gary tells her not to lie, Gideon says that she made a robot of Alun from harvesting his DNA, and recreated his personality from what Gwyn described. Alun's death was a fixed point, and the Legends would have been killed if they had tried to save Alun. She tells Gary that the Legends can't know, and asks Gary if he hates her. He says that he doesn't but needs some time to think and walks off. Gary admits that he's not cut out for the kind of decisions that Gideon will have to make.

Evil Gideon tells Gary that he's torn between love and hate, and tells Gideon that she made the right decision. Gideon wishes Gary saw it that way, while Gary tells Evil Gideon that love is complicated because people are complicated. Evil Gideon tells him that the timeline must be protected by logic, not emotion, and if he loves Gary, then he should leave.

Gideon says that she doesn't want to choose between Gary and her job, and Evil Gideon says that Gideon must choose.

Gary says that he's staying because Gideon needs someone to advocate for love. He runs out to the armory where Gideon is, and the door closes behind him. Evil Gideon ejects him into space, saying his infatuation with love is too great a risk to the timeline.

Evil Gideon tells Gideon that Gary has left the timeship, and Gideon figures that it's for the best.

At the manor, Gwyn takes Alun to the former's time machine. Gwyn says that he vowed to move heaven and earth to save his Alun, and then pulls out the robot's CPU and says that he's coming for the real Alun.