After spending a year in space, where she lived and conducted strange experiments, astronaut Molly Watts (Halle Berry) tries to resume a normal life with her family consisting of her husband, John, a gifted scientist, and Ethan, their son, a boy like no other. He is not their biological son as Molly is infertile. Ethan was designed by his father as the first prototype of a future line of "Humanichs", "human robots". But the return of Molly will have dramatic consequences for the entire planet and the fate of mankind.