Old friends meet again, things are different and people are different. Will two people who once didn't understand love have a grudge because of that incident? The identity becomes a mystery, and the ultimate ambiguity between the two people, whether it is hate or love, only they know in their hearts.
In the end, the sea trapped the fish, and the fish could not keep the sea. Their fate was separated by life and death. The sky was high and the sea was vast, and they were both safe.