Yunlan always thought that she was a fish in the sea, and Nansong was the grain of sand in the sea. Yunlan didn't know what to do? Should she continue to accompany Nansong silently until she dies, or should she let go of the fish and the grain of sand, and just watch Nansong's happiness from a distance? Yunlan thought about letting the fish "eat" the grain of sand, and then the fish would die with the sand, but Yunlan didn't do that, because she didn't want that kind of love, and she disdained the feelings obtained through scheming. Nansong always felt that Yunlan was as free as a fish in the sea, which he admired very much. Nan Song has always known about Yun Lan's feelings for him, but because of his ignorance about love, he never knew how to solve it. Nansong knew that he was used to Yunlan's company, but he didn't know if he loved Yunlan, so Nansong could only hope in time, and his answer to Yunlan was to let nature take its course. If the fish in the sea falls in love with the grain of sand in the sea, will time become a fairy tale? Or something else? In the end, Yun Lan got the love she wanted? Or has Nan Song mastered the true meaning of love? Hopefully time will give us the results.