Ni Sheng and Shen Xingzhi met in an orphanage during their childhood and made a promise to each other. Shen Xingzhi resisted a family arranged marriage and chose to leave home, and the two accidentally crossed paths before parting ways. Reunited six years later, Shen Xingzhi completely fails to recognize Ni Sheng and hires her to act as his divorce lawyer. Their clever and sensible son, Chenchen, becomes a major catalyst for the two. An industry conference reveals their legal husband-and-wife status, and one misunderstanding after another follows. Having gone through the entanglements of their original families and workplace turmoil, Shen Xingzhi finally recognizes that Ni Sheng is the childhood sweetheart he has been yearning for. The two resolve all their emotional knots, work hand in hand to build their careers, protect their family, and reap a fulfilled and happy life.