On the same day, in the same alley, two equally outstanding high school students passed each other. The two didn't have time to say a word, but after they met later, the relationship between the two became closer and closer, and many unforgettable things happened. The two people went from being ordinary friends to the closest partners; from the closest partners to lovers who knew each other and fell in love; they even later had their own home and children, and achieved a career. The difficult journey and emotional entanglements involved are worth savoring.