Brothers Jae-pil and Sang-gu move into their dream rustic-style house in the woods. When unwanted visitors arrive and awaken a sealed evil spirit in the basement, a dark aura begins to envelop the house.

‘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…

The tale of ordinary adults living their everyday lives who put everything into their baseball club and baseball.

Dragon Inn takes a case of a missing girl. She had no reason to run away from home, which makes the situation quite suspicious. While investigating her case, they find out that a pseudo religion is implicated. Trying to find more information of the girl, Seung-jin makes a mistake and their location and identities are exposed. Will they be able to defeat the cult and save the girl from them?