In a world teetering on the brink of the apocalypse, an orphaned boy named Jake stumbles upon a mysterious Hellhound that becomes his unlikely companion. Meanwhile, Hana, a mixed-blood girl, struggles with the heavy burden of her family's holy legacy. Fate intertwines their paths, leading to a profound bond that strengthens them both. As heaven and hell unleash their fury, Jake and Hana must join forces to confront the forces of darkness and save humanity from ultimate destruction. Along the way, they uncover ancient secrets that challenge their beliefs, test their courage, and reveal their true destiny.