For the first time in his life, Percival has set foot in the outside world, starting his long-awaited adventure. The Holy Knights, however, believing him to be one of the Four Horsemen of the Apocalypse, attack him mercilessly! But this is not enough to stop the path of our young hero, who will not rest until he finds his father, who is guilty of the murder of his grandfather, and has revealed all the hidden truths. Thus begins a long journey in the company of two precious friends: Donny the street artist and Sin the talking fox! Their first destination will be the valley of hell...