Living the life of a scoundrel, Yoohan, who should be preparing for his college exam, threats and acts deceitful to get money from other people. After losing his family by the hands of a vengeful man, Yoohan starts feeling guilty and decided to work hard to atone for their death. As soon as he found out that his old roommate, Song Myeongshin, was involved in his brother's death, he too sought for revenge. And as if by fate, he meets a man whose first words to him were... "I WILL HELP YOU."