You got invited to join a crime stimulating show. The rules are simple, one of the guests is chose to become the killer and complete the mission while the others figure out who’s the killer. If they guess it right, they win. If not, the killer wins. As you join in the show, you are quietly chosen to be the killer for this season. You’re teamed up with 3 more celebrities, one of them is Jisung, a well known CEO of an entertainment company.