Hyung Joo has just joined a gang when he is caught by Prosecutor Han, who, however, lets him go since he is a "small fish." Hyung Joo’s boss wants to take Prosecutor Han down and discovers that he routinely beats his wife. For this reason, he orders his men to tail him, and Hyung Joo—who finds himself following the prosecutor’s wife—discovers that she is his former high school teacher. The boss tries to use this coincidence to his advantage and convinces Hyung Joo to befriend her, unaware that Hyung Joo had once been in love with her and that his past is tied to hers far more than anyone could imagine.