When Wally West disappeared while saving the world everyone thought he died, but really he went back in time to 1995 and ended up in the body of a newborn girl, Willow. For twenty one years she grows up with no idea who she really was other than the feeling she was different, like she'd done this whole thing before, but then the world almost ends and she gets struck by lightning, that's when everything changes. With new superpowers and fragments of memories she doesn't understand Willow makes her way to Central City where she meets Kid Flash who takes her to the watchtower and asks her to join the team. Being there with them starts to make her remember more and more, but Willow doesn't want to remember because if her suspicion is right she's not who she thought she was and a secret like this might just unravel the team, a group of people who she has come to realize she really cares about.