Shen Fu, a merchant girl from the south of the Yangtze River, was asked to marry the eldest son Xiao Huaxu by the prince because she was born with infertility. On the day of her wedding, she was publicly humiliated by him for Bai Yueguang Liu Waner. Shen Fu was not accustomed to breaking off the engagement in a domineering manner. Unexpectedly, in order to break the fate of the heir, the Hou Mansion actually proposed that she remarry Xiao Yanli, the Marquis! She decisively agreed and became the stepmother of the crown prince. Xiao Huaxu and Liu Waner acted as monsters many times, but Shen Fu and Xiao Yanli worked together to deal with them. The prince was deposed, Liu Waner eloped with money, and Xiao Huaxu killed his biological mother in anger and was arrested. In the end, Shen Fu took charge of the Hou Mansion, gave birth to twins, and was favored by Xiao Yanli and became the treasure in his palm.