Eleven people with different purposes, from different industries and with different identities participate in a live TV reality show called "MAFIA". This globally watched TV show sets these 11 people as 9 civilians and 2 killers, requiring the 9 civilians to find the two killers hidden among them within the specified time. The program stipulates that all contestants can suspect and identify a killer in each round. Regardless of whether the identified person is a killer or not, they will be forced into their dreams and killed by the thing they fear most in their dreams. The death process will also be broadcast live around the world. The killer can also forcibly kill a civilian at the end of each round. If the two killers are successfully pointed out, the surviving winner will receive a huge bonus, enough to enjoy for a lifetime. For the sake of wealth, the contestants suspect each other, intrigue, and intend to use all means to put other opponents to death. A killing contest is quietly staged...