Lin Wan raises her six-year-old daughter, An'an, alone. When her mother is hospitalized with a serious illness, the enormous medical bills leave her desperate. On a rainy night, she stops the luxury car of Pei Zheng, president of the Pei Group, and offers him her only 200 yuan to pretend to be her fiancé for ten minutes to fend off her family's pressure to marry. She never imagines that Pei Zheng is the man with whom she shared a one-night romance at Yunting Hotel six years ago. This temporary contract draws the mother and daughter into the world of the wealthy. A paternity-test scandal soon follows. Pei Zheng's second uncle secretly arranges to have the test report switched and frames Lin Wan for leaking the group's confidential information. At the critical moment, Pei Zheng uncovers the entire conspiracy and firmly protects the mother and daughter. Once the truth comes to light, the villains are punished, and the family is finally reunited.