If I make you a prosecutor, are you going to be the president of South Korea?

Lee Seung-hwan transmigrates to South Korea and becomes an undercover agent for the large criminal organization, the Kimmun Group. Just when he thinks his future is bleak and his fate is sealed, he is shocked to discover that he also has a public identity: a high-ranking and respected prosecutor in South Korea! However, his life as a prosecutor is quite frustrating. He is not valued by his superiors, promotions and raises are out of reach, and he is even forced to investigate members of parliament and chaebol chairmen! Even the gang leader he infiltrates is ordering him to do the dirty work for the gang. New to the scene, beset by internal and external troubles, he is in constant danger of being overthrown! Fortunately, Lee Seung-hwan learns that this is South Korea...