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Do Chan, a genius con artist, raids a gambling site while pretending to be a prosecutor. While that's going on, an actual prosecutor who looks exactly like Do Chan gets into a car accident. On his way out of the country, Do Chan gets caught by the local gang he conned.

Ha Ra was looking for Do Chan, and he delivered himself to her. Do Chan is curious what kind of purpose Ha Ra has for him. To the genius con artist, Ha Ra offers a deal.

Do Chan and his team scam the prosecutors and try to run away to the Maldives, but Ha Ra catches them in the airport. Ha Ra makes an offer to Do Chan that she will let Do Chan\u2019s team go if he cooperates and helps her to find the stolen item. Tae Woong, who found out that Joon Soo is still alive after the accident, tries to use Nam Seung Tae to call out Joon Soo to wrap up the business.

Jin Gyung Hee, the senior prosecutor at Do Chan\u2019s new office in Seoul, assigns him to a case from his first day of work. The prosecutors in the Seoul Office notice something different about Do Chan, for they believe that he is Joon Soo, a serious nerd. Meanwhile, a group of gangs lure Do Chan into their hideout and try to kill him.

Do Chan learns that the drug lord Joon Soo had been investigating on may be the same man he himself has been looking for. He decides to help Ha Ra with the case in order to find what he's looking for. Meanwhile, Tae Woong is trying to find out what happened to Joon Soo after the car accident.

Do Chan and the gang pulls a job on one of Grizzly's drug mules. Tae Woong suspects that Do Chan might not be the person he's looking for. Meanwhile, Do Chan looks into a closed case without letting Ha Ra know.