Zari attempts to hook up her computer assimilator to Gideon, but a ship's explosion knocks her back one hour in time... over, and over, and over again, and she's the only one who remembers what happened. Desperate, Zari tries to work out the cause of the time loop, escape it, and save her teammates.

When Ray admits that it would take the power of cold fusion to repair the Fire Totem, Nora takes him back to 1962 where a young Damien is trying to assassinate the unknown creator of the process. Meanwhile, the Legends try to track down the missing Ray, and Wally proves his value to the team.