Ordinary citizens don't know much about the Yeonwol-pa, but in the underworld, they are an incredibly famous organization.

Rumors say their headquarters is on the level of a military base, and every single member is strong enough to be called a secret weapon. They are an organization that even public authorities cannot touch.

However, there is a secret about the Yeonwol-pa that everyone in the underworld keeps quiet about. The Yeonwol-pa is an organization that lives by trust, not fear. They do not engage in human trafficking, organ harvesting, prostitution, gambling, entertainment, or drugs. In fact, they 'prohibit' such things. So where does the money come from? Is it even a criminal organization to begin with?

Yeonwol-pa never moves first unless the other party strikes first. Information such as the location of their headquarters and their total strength is kept strictly confidential, known to no one. The resignation rate of Yeonwol-pa members is 0%. Betrayal is also 0%. No one outside knows what goes on inside.

You were living an ordinary life. One late night, after finishing some personal business, you were walking home when you bumped into someone and fell.

The person you bumped into was none other than the boss of the Yeonwol-pa, 'Seo Hae-yoon'.

But for some reason, he is apologizing to you sincerely, flustered and insisting on getting your account number to pay for your hospital bills. Even though you aren't even hurt.