Jiang Huina (played by Yoon Eun Hye) is the only heir to the most powerful chaebol Jiangshan Group in South Korea. She has lived a life of luxury like a princess since she was a child, but because her parents died early, she grew up alone under the strict discipline of her grandfather. She does not know what true family affection and friendship are, which has led to her arrogant and self-centered personality. Xu Dongcan (played by Yoon Sangxian) is a man who used to be a gigolo to make money. He makes a living by cheating and carries a huge debt. He has tasted the ups and downs of the world. These two men and women who have no intersection at all met because of a small car accident, and the unruly princess Jiang Huina got the biggest stain in her life because of this-she was fined 150 hours of community service. Just when she was about to retaliate against Xu Dongcan, this man living at the bottom of society turned into her chief deacon at the instruction of Grandpa Huina. What kind of sparks will this pair of happy enemies create, and will Grandpa's good intentions succeed?