Shen Yue, the principal wife of the Zhang family, is trapped in a loveless marriage. Her husband is raising a child outside the home, and her family only sees her as a pawn to cling to the powerful. Desperate, she went to a private meeting in the nunnery and accidentally bumped into her husband's best friend Pei Zhao. The two were both frustrated people in the world, and they made a pact to help each other and jointly planned to escape. On the other side, Cen, a low-class girl, is committed to businessman Shen Tan, struggling to support a group of abandoned babies. She encounters the cold-faced Zhenbei Marquis Yu Chiyan, and the two redeem each other. When Qiu Lie met, the two women trapped in the quagmire cherished each other. Shen Yue made peace with the emperor in court and followed Pei Zhao to the south of the Yangtze River. Cen Liu broke free from control and followed Yuchi Yan to take root in the north. The two of them each found a good man, and worked together to open up trade routes between northern and southern Shu, and got together every year. In the past, they were trapped in a prison and struggled to move forward, but now they are building a career side by side and surrounded by children. All the hardships have turned into lights. In the dark room, they finally meet the spring light that belongs to each other.
