To find a father who truly loves her six-year-old son He Xingchen, He Yunshu, chairwoman of Shengyue Group, hides her identity and participates in matchmaking as an ordinary warehouse stocker. Lin Zheng, a cold-chain delivery worker, meets her through an unexpected accident and becomes the "dad" designated in the child's heart. From initial doubts to taking care of the child together and facing life hand in hand, they gradually discover responsibility and warmth in each other. After He Yunshu's true identity is exposed, their relationship faces trials. Faced with the gap in status, family pressure, and past wounds, they choose to face it honestly, using sincere hearts to guard their child, love, and family. In the end, they become each other's firmest reliance.