Four teenage girls are abducted, kidnapped, and tortured. Designated by numbers on their skin with a hot iron, young girls are ranked in the evening. The one that finishes last will then be punished if her friends fail to solve a puzzle…

• Albatross
• Hitomi Usano
• Ruby Aiba
• Mirei Asaoka
• Yô Kamiyoshihara
• Hiromi Nakata
• Tsubaki Nino
• Kôta Okushima
• Riku Shiina