Jiang Sui is exploited by her birth family, while Song Huaishen suffers from an emotional disorder. The two unexpectedly swap bodies. Song Huaishen helps Jiang Sui escape her family's control, while Jiang Sui helps improve Song Huaishen's condition. Together, they investigate the truth behind Song's father's car accident. They later discover that Jiang Sui is actually the daughter of the Lu family and is engaged to Song Huaishen. After their bodies return to normal, Song Huaishen proposes to her, and the two live happily together.