A story about a prosecutor named Jin Jung who is armed with bad manners and delinquency. He breaks down the sanctuaries created by wealth and power, and he even takes down the greedy people living in those sanctuaries. He uses expedient methods over conventional ones, tricks over standard procedures, and delinquency over sincerity in order to stop the corrupt authorities from undermining society.
Lee Young Guk is a widower with three children. He still hasn't gotten over the death of his wife. He decides to hire Park Dan Dan as a live-in tutor for his kids and he becomes attracted to her. Meanwhile, Park Dan Dan has bright and positive personality despite her harsh situation.