Jun-hyuk, Min-Cheol, and Min-Jung have been close friends since their school days. Min-Cheol and Mi-Jung are in a romantic relationship while their friend, Jun-hyuk, who is also falling in love with Min-Jung, can’t conceal his envy of Min-Cheol and shakes with anger day after day. Then, one day, Min-Cheol suggests that Jun-hyuk fool around with his girlfriend, Min-jung…