Lu Changzhou, an agricultural scientist, unexpectedly travels back in time to 1977 and becomes He Dong, a young educated youth. Faced with a mother being forced into marriage, a timid and hesitant father, and domineering relatives, he uses his modern knowledge and unwavering determination to help his parents break free from their constraints, take the college entrance examination, and rewrite their destinies. From gathering medicinal herbs to exchange for food to earning money through bamboo weaving, from building warm greenhouses on freezing nights to braving the snow to escorting someone to an exam, he protects his family through his actions, ensuring that his parents no longer miss their chance to be together in this lifetime. When the dream ends, his parents are holding his hands tightly beside his hospital bed. It turns out that love can transcend time and bring a family together once more.