Domingo is in love with his classmate, Fatima. To conquer her, he is determined to buy a mp3 player; a difficult task in the middle of Mexico´s Zapotec mountain side. On his quest he meets 'Charal', an alcoholic homeless man that decides to help him.
Set in a post-apocalyptic world, young Thomas is deposited in a community of boys after his memory is erased, soon learning they're all trapped in a maze that will require him to join forces with fellow "runners" for a shot at escape.
The ultimate X-Men ensemble fights a war for the survival of the species across two time periods as they join forces with their younger selves in an epic battle that must change the past – to save our future.