While traveling to her new home, Chihiro and her parents take a wrong turn and find themselves in what appears to be an abandoned theme park, where Chihiro meets the mysterious Haku and then learns that her parents have turned into pigs.

The mysterious masked spirit called No Face wreaks havoc in the bath house after being let in by Chihiro, while Chihiro searches for a gravely injured Haku and meets Yubaba's very large son along the way.