Diego de la Muerte (Wilmer Valderrama) is a 21-year-old Latino-American living in East L.A. where the Día de los Muertos, Day of the Dead, celebration is right around the corner. Diego dresses up as a zombie mariachi before going to a party, in the process tattooing an Aztech death symbol onto himself. On the way to the party, his car crashes and he is killed. He is sent to Mictlan, the Land of the Dead, where he is sacrificed to Mictlantecuhtli (Nathan Mussell), the God of Death, who rips Diego's heart out and seals it in a clay pot, giving him total control over his soul. Diego is then returned to Earth, imprisoned inside of a his dead body, his make-up permanently etched onto his face. Now, endowed with the dark power to restore life or to take it, he must battle against the dark god Mictlantecuhtli for his soul, and for the souls of those he loves.