While rescuing someone on a rainy night, the adult Qi Zhao accidentally enters the system's binding circle. When he wakes up, he has become the six-year-old heir of the Marquis of Pingyang's household. With his father bedridden and the family lacking someone capable of making decisions, he decides to find himself a mother. The clever and courageous Lu Jinshu enters the marquis's residence, and the two gradually grow close. Together with their companions, they care for their family and uncover old secrets, bringing laughter and warmth back to the once-lonely household. Years later, the grown-up Qi Zhao meets Princess Xi He. As they come to know and trust each other, they join hands and move forward together. He also learns to extend his care to even more people. But how will the grown-up Qi Zhao face the Empress mission that has been impossible to cancel ever since he was six?