Prom night is ruined for a group of teenagers thanks to the assassination of their teacher Marion, who was brutally murdered just two days before the big event by a faceless maniac. This will ruin the plans of Arturo who was waiting for that exact moment to declare himself to the girl of his dreams, María Elena who just suddenly started a relationship with a mysterious magician called Tatán. Arturo will start a friendship with Beatriz, the most popular girl in school, to get María Elena jealous. But what Arturo doesn’t know is that the faceless maniac isn’t done killing. He and Beatriz will have to begin solving the mysteries for all the wrong reasons and, in the meantime, also try to survive the hands of the killer.