Abandoned by her husband because of her unusual condition, Kim Mi Hi turned to her son Kim Jae-sung who arranged for a job as a maid at his boss' house Jin Dong-Ha a fourth-generation chaebol who inherited a fortune at a young age after his parents' death. At first, Dong-Ha was annoyed by Mi Hi's expressionless face but under a special circumstance, he saw her smile which captivated his heart. It is then when he realized that he fell for her.