The story revolves around Wang Dashan's family. The originally peaceful family of three has become chaotic and warm due to the intrusion of an "unexpected guest". Suddenly, Wang Dashan discovered that his daughter Xiao Mi's biological father is someone else? What's even more worrying is that this person is his daughter's idol Ke Lei? When the stable family relationship is disrupted, when blood and upbringing are placed at the two ends of the scale, when "love" is counted by the ranking, the rules of getting along in this atypical family need to be upgraded and updated, and everyone's understanding of "home and love" has quietly changed.