In a grotesque, gothic, and steampunk-inspired world of blasted landscapes and intricate mechanical structures, young zombie boy Ot lives among an entirely undead population leading ordinary lives. His routine shatters when a living frog plummets from the blackened sky during the hazardous Uzu-Uzu weather phenomenon. This discovery ignites Ot's mission to return the anomalous creature to its own world. He allies with a trio of inept superheroes, navigating decaying terrain while evading relentless pursuit from tricycle-riding zombie police forces alerted to the frog's presence. Ot's journey across his crumbling environment forms the core of his story, propelled solely by his determination to aid the displaced frog.