Film tells about the young man and his father Kitai Raige Cyphe. They are on a space ship and then be crashed and stuck in Earth deserted, where over a millennium ago humans evacuated to avoid the Cataclysm. Cypher seriously injured after the collision so Kitai has to engage by himself in a difficult and dangerous journey to send SOS. During the journey, Kitai faces to the new rulers of the earth with the new ferocious animals. Cypher and Kitai learn how to fight and trust each other for a chance to return home.