Jung Yun is a sweet and innocent girl. She's nice to everyone even if people are stabbing her from behind. She always kept her smile paste on her face. But her kindness has make her fall into traps. One day a stranger ask her for help to carry some box from his car as he told her that his back is injured. Too innocent Jung Yun followed him and got abducted by him. When she's awake, she found herself in bed and was forced to be a slave if she doesn't want trouble. From that day she is one of the slave in the residential.