Su Tian's husband, Cheng Shi, is a flight attendant. Because they spend so little time together, one day Su Tian suddenly notices a QR code on his arm. Suspicious, she follows Cheng Shi onto his plane, only to discover that all the passengers are lining up to use the restroom. When she pushes open the restroom door, she uncovers Cheng Shi's secret: he is actually an airborne doctor. His airline group has partnered with a medical company to launch a healing program. The high-altitude environment helps patients relax, making it possible to provide supplementary treatment for infertility. Under Cheng Shi's care, one patient after another finds a new lease on life. Eventually, the couple puts their misunderstandings behind them and reunites as a happy family.