M, a mystery writer, has a girlfriend of five years named F, who disappeared on Halloween night. When a woman comes and claims to be her sister, M begins the search for his girlfriend. Along the way, the people he meets describe a woman very unlike the F he knew.

• Hiroshi Abe
• Machiko Ono
• Chara
• Kankuro Kudo
• Daichi Watanabe
• Yuzu Aoki
• Yui Narumi
• Mieharu