Just after finishing the college entrance examination, Ye Chenguang wanted to move in to live with his father, had a huge argument with his mother Chen Jing, and slammed the door and rushed out, accidentally getting knocked down by a car. Upon waking up, he unexpectedly time-traveled into his mother when she was young. He was forced to face the predicament where his grandpa would not let her study and forced her to marry someone. From resistance to firmness, he walked the path of studying and taking the college entrance exam again for his mother, and finally came to understand how difficult it was for his mother to walk out of the countryside. After returning to the present, he reconciled with his mother.