Iván, a fourteen-year-old teenager, and his uncle Jaime, a spare-parts dealer, dream of illegally emigrating to Chicago in the hope of a better life. Needing money to pay their border escort, Jaime introduces his son into the shady world of stolen spare parts. Iván learns the tools of the trade, all the while having fun, until the day he understands that his uncle's intentions no longer concord with their initial plans.