Seven people were kidnapped by the murderer and were in a secret room. The murderer asked the seven of them to guess why they were kidnapped, otherwise they would kill one person every ten minutes.
| Directing | Zhang Ming | Director |
| Production | Yang Shun Xia | Producer |
| Production | Ding Xian Yang | Producer |
| Production | Zhang Zhi Yuan | Producer |
| Production | Song Jian Jun | Producer |
| Production | Li Yao Bo | Producer |
| Production | Guo Hao Yang | Producer |
| Production | Yao Jian Jiang | Producer |
| Directing | Song Jian Jun | Director |
| Writing | Zhang Zhi Yuan | Writer |
| Writing | Song Jian Jun | Writer |