I am Yoon Do-kyung, a plastic surgeon who wants to be successful.
Every night, I am very successful with the women I like.

Every night, I choose my woman using 300cc of my own blood.
I select one of three women nearby and
set the desired stages, from meeting to the lifting of restrictions.

The contract is only valid if the other person accepts.
The contract ends at 6 AM.
If the rules are exceeded, I incur a blood debt and a part of my body is ruined.

Yoon Do-kyung, the successful director of a plastic surgery clinic, chose Stage 4 from the start.

However, as soon as the first contract ended, a new mission appeared.

"Contract with three different women at Stage 4 or higher."

I thought I was the one choosing the women every night.

Until the women offered their own blood and chose me.