Before time travel, Rong Yu was a respected mathematician who died unexpectedly at an award ceremony. Before time travel, he was hit by a car while trying to save his 8-year-old son. After traveling through time, she discovered that the 18-year-old Rong Yu she possessed had a rough life. He grew up in the countryside. After his mother died, he was taken back to his father's house. He was often ostracized by his stepmother and half-siblings, and suffered from severe depression. At the same time, she was shocked to realize that her 8-year-old son had become the chairman of the Ji Group in his 70s, and she had become the "grandma".