Tan Youyu, a young man who loves piano, signed up to be stationed in Shanghai when he was 20 years old. On the sea, he met Qin Yufeng, who would influence him for the rest of his life. This era belongs to Tan Youyu, a youthful and ignorant 20-year-old, but it does not belong to Qin Yufeng. This happy, crazy and pure time in the sea has been kept in their deepest memories throughout the ages. So they catch up with the times with their memories...
Intention: Can they meet again after traveling through time and space again?