‘Dragon Inn’ looks like an ordinary Chinese restaurant but in fact, it’s a safe house of an organization that executes revenge for people who are in difficulties. The five members, Cheol-min, Ji-hye, Seung-jin, Yong-tae and the Boss are gathered for their own different reasons. One day, a murder case related to an infamous entrepreneur happens. Even worse, the victim turns out to be a friend of one of the members of Dragon Inn….