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.

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 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.

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.

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 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.