Gabriel and Elias, two old friends tired of their misfortune, have decided to carry out a plan that will change the course of their lives, and will serve as a lesson to the man who personifies their frustrations: a successful and corrupt businessman that just married Sofía, Gabriel's former couple.
While leading a police investigation of a massacre in a public school at the border of Mexico and U.S.A, special Agent Emanuel Ritter links this strange case to the coming and rising of the ancient demon Belzebuth. But in order to stop the trail of upcoming infanticides, Ritter shall have to confront himself before dealing with the forces of good and evil.