Alex, 43 ans, est dépanneur automobile dans le garage que dirige d'une main de fer sa mère. Un jour, il dépanne une jeune femme et passe la nuit chez elle, mais au petit matin elle a disparu lui laissant sur les bras trois enfants.

In 2050, Earth has become a dry and desolate place. Fighter pilot Nova is forced to travel back in time to prevent a devastating environmental disaster, however an unforeseen side-effect of time travel makes Nova young again and she crash lands into 2025 as a twelve-year old. Nobody seems to take her and her mission seriously, except for Nas - a neglected teen who tries to keep...