She is an ordinary urban white-collar worker working in Shanghai. Suddenly a cousin came to the family. She was born with a short-circuit in her brain and began to live in dire straits.
She, a top killer who was tired of wandering, accidentally obtained a person's information. The woman disguised herself as a man and came to her home, but suddenly discovered that she was her childhood sister. In order to protect her, he began a comfortable and adventurous life.
"I've already lost something, and I can't lose her again, even if the price I have to pay for it is death."
"If she really leaves one day, I won't stop her. I just hope to come back soon."