It tells the story of Lin Xingyue and Su Yichen, childhood sweethearts who reunited in high school after being separated for many years due to moving. Su Yichen silently guarded his secret love, helped Xingyue adapt to the new environment, study hard, and finally confessed his feelings after the college entrance examination. The two were admitted to the ideal university together, and began to live together sweetly in their sophomore year. Later, they went to London to study together, experienced growth and challenges, and finally started a family, raised a son and a daughter, and shared a delicate love story for a lifetime.