Xu Yunyou is a little girl who is hot on the outside and cold on the inside. She is kind and naive, but due to her growth environment and life experience, she has a lonely and refined soul. One day, she secretly skipped class and went to a video game arcade with her friends, where she met Chen Yanyan and was confessed to. Xu Yunyou, who witnessed the rejection of the girl's confession, discovered that Chen Yanyan was in the same school as him, and also misunderstood Chen Yanyan because of his words and deeds. The two accidentally took the same unusual last train, and they met because they were competing for seats, and both were late. During this period, Chen Yanyan's soul accidentally crossed over, and Chen Yanyan's subconscious soul in the parallel universe appeared and merged with the current Chen Yanyan. In school, Xu Yunyou and Chen Yanyan became happy enemies because of their quarrels and their personalities of not letting anyone else. A series of struggles sparked between the two. After the sports meeting, the two resolved their conflicts and became good friends. But they are facing a class separation crisis. After school started, Xu Yunyou came to an unfamiliar class alone. Chen Yanzhi participated in the competition but did not return to school. The two never met again. Xu Yunyou lived on campus and classes ended at ten o'clock, while Chen Yanyan went to school and did not meet. I thought the relationship would cool down, but one night, Chen Yanyan showed up at school and went to look for Xu Yunyou, using the pretext that the teacher asked her to take her out of class to celebrate her birthday in advance. Xu Yunyou noticed the strangeness but didn't say it clearly, and the relationship between the two eased. On the eve of the Mid-Autumn Festival, they enjoyed the moon together. The two opened their hearts and knew each other's secrets. However, Xu Yunyou felt that Chen Yan was teasing her and didn't take it to heart. Chen Yan began to avoid meeting each other, and the two began to distance themselves again. Later, Chen Yanyan made an appointment with Xu Yunyou and took her back to the past on the last train, fulfilling her wish. Xu Yunyou wanted to thank him, but he deceived him into taking the last train and was sent back. Chen Yan realized that he was about to disappear and did not want to make her sad again, so he left alone. However, Xu Yunyou discovered as early as his birthday that everything was just an illusion and could only hide the truth in his heart. The real Chen Yanzhi returned from the competition and the two met again and passed each other. Chen Yan met and talked with his subconscious, and the memory returned and merged into one. Chen Yan's unexplained blank memory returned, and it turned out that he had been paying attention to Xu Yunyou for a long time. It's just that Chen Yan is not as cheerful as his subconscious soul. He doesn't like to talk and will only support silently behind his back. He didn't want to disturb Xu Yunyou, a senior in high school, but wanted her to have a bright future. The two have missed each other, but the boy's adventure into the world continues.
Concept: The memories of youth are sealed into iron boxes to accompany young people as they grow up step by step.
