"It is better to have learnt and sinned than never to have learnt at all, isn't that how it goes?" "... No, Im Jaebum. That is not how it goes." "How does it go then? Tell me, or rather... Show me, Choi Youngjae. Show me how it goes." ------------ Leather-jacketed and full-time bad boy Im Jaebum makes an unfortunate bet and lands himself the lead role as the angel in the school play alongside the demon played by the ray of sunshine Choi Youngjae. They will find out the difficulties that come with teaching the complexity of good and evil to their polar opposite and what that strange tension may reveal itself to be.