Tide is the messenger between the deep sea and the shore, and it is also the starting point of the bond between the mermaid Ache and the human girl Lin Xingyu. When he was eight years old, Xingyu picked up an injured boy with silver scales in the shoal of an abandoned dock. His tail fin shone with a cold light like the moonlight, and his eyes hid a loneliness deeper than the deep sea. She secretly hid him in the pool behind the rocks, filled the water with shells, and used songs to dispel his anxiety; while Ache taught her to recognize the language of the tides, gave her pearls that could breathe underwater, and whispered the secrets of the deep sea to her.
As he grew older, Lin Xingyu's parents changed their workplace to another place and attached great importance to Lin Xingyu's education, so they took Lin Xingyu to a key junior high school in the county. Lin Xingyu, who had not been exposed to complex society, gradually became familiar with him in the new school and gradually discovered the dark side of the school. The simple and upright Lin Xingyu He stood up like that, but later found that the situation gradually became uncontrollable, and he suddenly became a new target of bullying. The cowardice of his parents and the long-term suppression, coupled with the powerful injury to Xingyu that time, made Xingyu unable to go to school normally. Xingyu's parents had to take Lin Xingyu back to his hometown for training.
A search for death on the beach brings the pair together again...
This encounter that started in the shallows will eventually write an affectionate confession about protection, sacrifice, and crossing mountains and seas in the sound of the tide. It turns out that the most touching love is never limited by the distance between land and deep sea, but only about the courage of two hearts to illuminate each other.
