Song Haoyu is the single father of a boy named Song Xingchen and the CEO of a affluent company. He is hopelessly out of his depth when it comes to all things childcare-related. Qi Sile is the single mother of a girl named Qi Ziyuan. As her daughter urgently needs money to pay for a potentially life-saving operation, Qi Ziyuan has become anxious. But her positivity serves her well, and her optimistic outlook means she has not lost hope. The two single parents’ paths cross when Song Haoyu is looking for a birthday gift for his son. Qi Ziyuan knows that Song Haoyu’s firm has the power to grant her own company a lucrative contract – which could help her pay for the surgery. She tries to convince Song Xingchen to ensure her firm lands the contract. Song Haoyu senses an opportunity: he feels that Qi Ziyuan is a competent parent, and could help him with his son. A “marriage of convenience” beckons. But could living under the same roof bring these two single-parent families together?