Ten-year-old Chihiro Ogino and her parents, Akio and Yūko, are traveling to their new home. Akio decides to take a shortcut and stops in front of a tunnel leading to what appears to be an abandoned amusement park, which Akio insists on exploring despite his daughter's protests. Upon finding a seemingly empty restaurant still stocked with food, Chihiro's parents immediately begin to eat. While exploring further, Chihiro reaches an enormous bathhouse and meets a boy named Haku, who warns her to return across the riverbed before sunset. However, Chihiro discovers her parents have turned into pigs, and she is unable to cross the now-flooded river.