Kim Dokja lives like an experimented animal, every day only eating and being experimented on makes that child forget that he is human. By the time he heard the first hello and was treated like a real child by Yoo Joonghyuk - the new caretaker, Dokja saw that person as his world. 10 years passed, Dokja sat on the bed swinging her legs in boredom, the door of the room opened.

"Ah! What are we playing today?" The child asked innocently, his cheeks blushing with excitement.