Tupac, son of an Aymara mother and a Japanese father, lived with his family in northern Argentina until one night someone, or something, broke into his house and violently took them away from him. Tupac always believed that El Perro Diablo (a legendary demon dog) was responsible for the tragedy, but, over the years, he discovers that it was not a fantastic beast who took his family, but four men and women who continue to kill other people. Tupac decides then to go after them using traditional weapons and martial arts to become EL PERRO DIABLO and get revenge.