Jiang Hao, an ordinary employee, and Shen Xueyao, a businesswoman facing difficulties in her career, strike a mutually beneficial agreement: they will raise a child together as husband and wife. Over three years of living together day and night, they gradually fall in love. However, rumors spread by their business rivals about the child's parentage plunge them into turmoil. Joining forces to uncover the truth, they expose a conspiracy to seize control of the company and unravel the mystery surrounding the child's origins. Their fake arrangement eventually blossoms into genuine love, and the family of three finds its happy ending.