After gene-editing experimental dog Xuan Che escapes when the laboratory is attacked by the Night Shadow organization, and is pinned down by a giant boulder while saving a little boy named Mu Mu, only to be misunderstood by the child's mother, flower shop owner Lin Shutong extends a helping hand. Xuan Che breaks free from the boulder to retrieve the stolen bag of a woman named Jiang Wan. After the truth comes to light, he is adopted by Lin Shutong. Life in the new home is fraught with turbulence: vicious neighbor Ma Guifen makes things difficult at every turn, ex-boyfriend Feng Ziang endlessly harasses her over gambling debts, a black-hearted pet hospital owner attempts to swindle money, and best friend Chu Weiwei conspires with Feng Ziang out of jealousy to set up a kidnapping trap, while Xuan Che repeatedly risks his life to save Lin Shutong.