Sadie is Kara Danvers and Lena Luthors daughter from 20 years in the future. Earth is at war with an alien army called “The Zelites”. Kara and Lena lead the fight against the alien army, but they are losing. The Zelites are too powerful. In a last ditch effort to save earth, Lena creates a time traveling watch so she can go into the past and get past Lenas help. Them win the future war. But catastrophe strikes, The Zelites ambush them, and in the chaos of the fight, Sadie sees her parents, Lena and Kara are trappped, and she must use the watch to save her parents and earth from the Zelites. But there are rules to time travel, kara and Lena can’t know that Sadie is their daughter from 20 years in the future or their could be scientific catastrophes. Scared and alone, Sadie crashes through the portal, falling through the sky and crashing down to the earth twenty years in the past, leaving a giant crater where she landed, attracting the attention of the DEO, and past Kara Danvers who does not know Sadie is her and Lenas daughter from the future. Can Sadie navigate this world she does not know and convince her parents to help her without them finding out she is their daughter from the future?