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.
彼此毫無關聯的六位男女,某天突然在立方體房間中醒來,不知為何被監禁於此的他們試著逃離,卻不斷遭受熱感式雷射、線鋸推進器、火焰噴射等各式殺人陷阱的襲擊,不解開設計好的密碼,便絕對無法逃脫!在極度緊張和恐懼不安中,他們逐漸耗盡體力,瀕臨精神崩潰邊緣,平時潛藏的人性黑暗面也逐一浮現……