Years after an alien invasion almost extinguished human mankind, refugee on a secret base on the Moon, three heroes decide to jump into a time travel in the desperate attempt to save the survivors but they don't know that the Sentinel is waiting for them.
When Chloe's dangerous new power emerges, she's ordered to superhero boarding school. The family divides as Phoebe, Barb and Billy hide with her, while Max, Hank and Nora pursue them, leading to a battle over their future
