Plot: In the future, Earth becomes inhabitable and mankind moves to Nova Prime. However, aliens try to conquer Nova Prime but are defeated by the Rangers under the command of General Cypher Raige. The aliens bring the predator Ursas to hunt down the humans attracted by their fear and Raige develops the fearless ghosting technique to defeat them. On the same day that Raige returns home, his estranged son Kitai Raige is not advanced to the Ranger position in the academy. Raige promises his wife that he will travel in his last assignment before retirement and she convinces him to bring Kitai with him. When their spacecraft is damaged by an asteroid storm, she crashes on Earth and only Raige and Kitai survive. Raige breaks both legs and Kitai needs to cross the hostile and dangerous planet to retrieve the beacon and save their lives.
Alternative Plot: People were forced to leave Earth a millennium ago to establish a new home on Nova Prime. Now, Gen. Cypher Raige (Will Smith) heads Nova Prime's most-prominent family. Cypher's teenage son, Kitai (Jaden Smith), feels enormous pressure to follow in his father's legendary footsteps -- which strains their relationship. Cypher and Kitai set out on a trip to mend their bond, but when their craft crashes on Earth's hostile surface, each must trust the other greatly -- or perish.
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