In order to pay for her mother's medical bills, Mu Chu accepts one million yuan from the Lou family and breaks up with Lou Sichen. However, after the breakup, she discovers that she is unexpectedly pregnant. Five years later, Mu Chu secretly marries a stranger, but a year later, while helping her best friend catch her cheating boyfriend, she accidentally runs into Lou Sichen. Old feelings reignite, and they spend a wild night together. One day, while Mu Chu is in an emergency, her daughter goes out to find her and bumps into Lou Sichen. The child calls him "Dad," and their entangled past proves impossible to sever...