Chenghai in Linchuan City hides the secrets of the mermaid clan. The ten-year-old mermaid Omega, who was playful and violated the rules of the clan, transformed into a beach. However, due to the time limit, his tail was exposed and he passed out on the edge of the reef. He was bumped into by the 12-year-old human Alpha.
After Alpha rescued him, Omega gave him the token Mermaid Heart and promised to go ashore to find him at the age of eighteen. But due to the special restrictions of the mermaid's heart, after the two separated, they completely forgot about each other's appearance, leaving only a vague memory in their hearts and a vague bond between them.
A few years later, the adult Omega was finally able to go ashore and embark on a journey to find the Alpha. The two met, tested, and got close again and again, but they never recognized each other.
Until the moment Omega took back the mermaid heart, dusty memories came flooding back.
Purpose: Respecting the life of the ocean means respecting human life. All things have the same origin and share weal and woe.