Arle, during her summer vacation, is visiting her grandmother and exploring the forest surrounding her house. Arle soon catches wind of a construction company headed by Satan attempting to raze the forest to make room for a recreational area. In order to protect the forest, Arle sets off to take on Satan's crew. Skeleton-T, Sasori Man, and Suketoudara make a cameo in the intro as some of Satan's construction staff, chasing Arle into the forest and beginning the game.