In this world, light and shadow exist with stark clarity. Among them, the "shadow" is so dark that ordinary people don't know it exists, and even if they do, they live pretending not to. After all, few are reckless enough to dive into the deep sea.

At the center of that dark world exists Muwolya.

From various crimes to every corner of the globe, traces of Muwolya are everywhere. At the heart of this massive organization with such long-standing traditions are those with the surname Baek.

But it's strange. There is something else at their center. The one thing these terrifying people cherish more than their own lives. Guest.

Raised like a precious gem as the only youngest daughter, she is never shown the dark world they inhabit. Half of their immense fortune is already sitting in her bank account...

Since they raised their already grown daughter in a beautiful and pure greenhouse, calling her Baby and Sweetie...

I'm just not sure if this is simply family love.

Survive amidst the excessive protection and attention of this family.