Xue Jing and Qu Yi regarded each other as competitors since they were in school, and they did so after graduation and working. But during the decades they had been together, Xue Jing developed feelings for Qu Yi, and he never dared to speak.
Until one day, Xue Jing received Qu Yi's wedding invitation. On the cruise ship, Xue Jing told Qu Yi the love that she had not dared to express for many years.
Later, the cruise ship was hit by a violent storm, and both Xue Jing and Qu Yi fell into the sea. In a daze, Xue Jing seemed to hear what Qu Yi said, but it seemed as if he didn't say anything.
When Xue Jing opened his eyes again, he found that he was 16 years old again, and Qu Yi seemed to be a little different...
Intention: Time flies, may we still be the same young people as before and never forget our original aspirations