Su Man always thought her husband Lin Chen was just an ordinary worker. Watching the family squeeze into a cramped rented room, she decided to take her son Lin Xiaobao and leave to pursue a better life. Five-year-old Xiaobao is clever and quick-witted. He knows his father is not as ordinary as he appears on the surface, repeatedly telling his mother the truth, but it is only treated as childish banter. Through a series of coincidences, Lin Chen's true identity slowly surfaces, and only then does Su Man understand the reasons why her husband has always chosen to live a low-profile life. Meanwhile, past conflicts come knocking, bringing crisis to this small family. Lin Chen steps forward to protect his wife and son, resolving the continuous waves of trouble.