San Kim, an ordinary comic book maniac. One day, when he was forcibly made to swallow an unknown object by some bullies, he unexpectedly becomes a 'superman' who exerts transcendental powers. But what do you do when you become a ‘superman’? Will you be a 'hero' who has to go through hardships to solve the case? Or a 'villain' who commits all kinds of evil? No matter how you look at it, the ones with a lot of money and charisma are ‘villains’. If so, why should I bother being a hero?!