In an industrial neighborhood in northern Mexico, Xul is a teenager who dreams of being loved by everyone by playing corridos tumbados, but he lacks talent. Desperate, one night he summons the Devil, and his life changes drastically when he meets Diablito, the leader of a group of teenage hitmen who worship his music. In pursuit of his dreams, Xul places himself at the heart of a fierce battle between good and evil, from which he will only survive if he is willing to transform his soul.