An adventure between a naughty boy Doochi and a dog Puku, the monsters Cura (Dracula), Mira, and the werewolf Reno who want to become humans!! 1000 years ago, Dr. Marvin, a psychologist, catches demons and puts them in a magic jar to conquer the world. The demons, who are supposed to be reborn after 1000 years, are released from magic in the form of imperfect humans 999 years later due to an accident. Duchi and Puku fight against Dr. Marvin's conspiracy.
