Short and to-the-point synopsis. A terminally ill young man with a mysterious past gets embroiled with a spoiled and rich girl, who he intends to use to gather as much money as possible to guarantee the future of his sister. Long and detailed synopsis. Albeit young, Bin has been diagoned with an inexplicable and fatal illness that sealed his fate. Determined to make his sister live a better life than his, he tirelessly works day and night to ensure she's well taken care of when his inevitable death comes. As his condition keeps worsening, he meets with an obnoxious and rich girl called Jasmine, who hails from a prestigious and vastly wealthy family. Through a series of unfortunate events, Bin ends up offending her, and is eventually convinced to become her servant due to his desperate need for money.  In contrast to him, Jasmine's life has been easy-going and carefree, but her meeting with Bin would cause big changes. Slowly, as she persists in making him submit, she would learn about his mysterious past and the motives behind getting entangled with her.