The world is stunned when a group of time travelers arrives from the year 2051 to deliver an urgent message: Thirty years in the future, mankind is losing a global war against a deadly alien species. The only hope for survival is for soldiers and civilians from the present to be transported to the future and join the fight. Among those recruited is a high school teacher and family man Dan Forester (Chris Pratt). Determined to save the world for his young daughter, Dan teams up with a brilliant scientist and his estranged father (J.K. Simmons) in a desperate quest to rewrite the fate of the planet.