Returning veteran Lu Chen, to take care of his dependent sister and to find the truth of his family's past, enters a contract marriage with Shen Qinghan, female CEO of Shen Group. At first, the two had their respective needs and kept a distance from each other. As they jointly faced business transformation, family entanglements, and life choices, Lu Chen used his calmness and sense of responsibility to protect his family, and Shen Qinghan gradually came to understand the sincerity and tenderness beneath his strong exterior. The two built trust through mutual support, hand in hand uncovered sealed past events, guarded family affection, career, and dignity, and turned a piece of contract into a heartfelt promise to accompany each other for life.