Park Bong-soo (Im Chang-jung), a struggling actor stuck with minor roles, dreams of one day landing a lead. One day, he's cast as a prosecutor and is handed a fake but realistic prosecutor ID. While out drinking with fellow actor Kim Wang-gi (Na Han-il), Bong-soo jokingly pretends to be a real prosecutor. To his surprise, people fall for it. Emboldened, he begins impersonating a prosecutor and investigator, going after “social evils” in the name of justice. With the money he earns through these ...