Olivia Charles is a young woman from the countryside who comes to the city to work. On her first night in the city, she is maliciously set up by her fellow villager Sabrina and, by accident, ends up having a one-night stand with a billionaire, Chandler Harrision. Because neither of them saw each other's face clearly, Sabrina pretended to be Chandler Harrision's girlfriend, hoping to marry into wealth. Olivia, relying on her own abilities, successfully lands a job as a housekeeper at the Chandler Harrision's hotel, and accidentally discover that the man she had a one-night stand with is her new boss. Olivia then finds out she is pregnant with his child, making matters more complicated.