The Magic Carat troupe makes a summer trip to Firefly Valley, to visit Grandma Nakamori's cousin, a photographer named Tokuji. However, that night, a group of construction workers who have been building a hotel come to ask Magic Carat for their help in ridding the valley of some ghosts, who have driven off most of the construction workers. The troupe takes up the challenge, but are scared off when the ghosts really do appear...