A promise of saving lives in the glacier of 1980 connects the destinies of two families. Chen Dongsheng and Lin Xiaoya were betrothed in childhood, yet separated by family background, misunderstandings, and years. Chen Dongsheng fights his way up from the bottom, offering deep devotion and protection; Lin Xiaoya goes through growth and emotional twists, gradually seeing the true heart. Secrets of the older generation, business plots, and deceit from those around them follow one after another. Trusting each other and investigating side by side through crises, the two finally walk toward the wedding. Yet shadows of the past have not scattered, and a sudden farce brings the truth to the surface.