To make a mafia work, you need three bosses of each gender. The Brawn, who is the best of the best among the fighters and who is usually the one who does the "really" dirty work; the Brain, who is the one behind every sinster master-plan in the making; and the Boss, the one who runs the whole underground.

But what will really happen if things inside the house starts to crumble apart? The female leader of Superbia had endangered a sole innocent man(who had no idea of the underground war going on around ) just by falling in love with him. Hyoyeon never meant to admit it, but Lee Hyukjae was just too good to be true. Even for the almighty female boss of Superbia. And how did Junho(the male boss) react to this? Well, to put it simply, he didn't like every bit of it.

On the other hand, what if the person you've known for a long time and have been your partner for almost five years start to ditch you for a weak and frail girl, that he just met?

So Eun and Kim Bum had known each other ever since they were dubbed the best aand the boss of all fighters in Superbia. They did every mission together, guarded the two boss together and even looked too innocent to mistake them to be dangerous together. But when he left his partner in the hungry hands of Dragon Flame during a supposed rendezvous just so he can eat dinner at a fancy restaurant, everything falls apart.

And what if being smart doesn't turn out as great as you thought it would be? Especially if your family doesn't know a thing about you working under the most powerful "group" in Korea. Of course you'd try your best to hide it from them. When at home Sooyoung wears a mask to hide her true self and laughs merrily with her family. But at night, the mask comes off and she is Cho Soo Young: female brain of Superbia and the woman behind the desk with her partner Choi Seung-hyun AKA T.O.P.

Superbia. One of the elite "clans" in the whole of Korea.

Tiger. The number one enemy of Superbia.

It's an all out underground war and one must do everything just to survive. The motto is: "Kill or be killed." No mercy, no pity, no sympathy and no second-thoughts. Only pride and hatred to fuel your desire for power and MONEY.