Upon reading Mr. Cha's notebook, Jong Sam finds out the truth behind his mother's death. He finds out that Kwang Ho was the one who ordered Mr. Cha to kill him and his mother. As a result, Jong Sam and Jin Young begin to investigate the case. Meanwhile, Kwang Ho plans to eliminate all the people who betrayed him.
엄마의 죽음이 이광호 때문이란 것을 알게 된 종삼은 진영과 함께 수사에 착수한다.
한편 이광호는 전열을 가다듬기 위해 배신자들을 처리하려고 하는데..
