- 6 people are locked in a mysterious cube shaped room. These 6 people are: 29-year-old engineer Yuichi Goto (Masaki Suda), 37-year-old association employee Asako Kai (Anne Watanabe), 31-year-old Freeter Shinji Ochi (Masaki Okada), 13-year-old middle school student Chiharu Uno (Hikaru Tashiro), 39-year-old mechanic Hiroshi Ide (Takumi Saito) and 61-year-old company executive Kazumasa Ando (Kotaro Yoshida). These 6 people are complete strangers to each other. They don't know why they are locked in the room, but they try to escape out of the mysterious cube. If they can't decipher the code, they won't get out of the cube.