In the pastoral back yard of a ranch house in rural Mexico, a grandfather is about to fight his grandson. Standing in one corner of a makeshift wrestling ring is Relámpago Azul (Blue Lightning), otherwise known as Chava (Demián Bichir), a tough but tender former luchador (wrestler). In the other corner is 13-year-old Alex (Evan Whitten), Chava’s American grandson, who is reluctantly spending spring break with his grandfather and cousins on the ranch. Alex is wearing the mask of Perico Verde (Green Parakeet), his late father’s former lucha libre (Mexican wrestling) persona.