On the bank of the East China Sea, Lan Ge was originally a lonely mermaid, born in clear water, but imprisoned in Youge. Thousands of years have passed, and the world has become greedy for his scales and pearls. Immortal sects want to use his soul to refine weapons, and the gods regard him as a nuisance. Lan Ge was unwilling to be sacrificed, but could not escape his fate, wandering between the human world and the path to immortality. She used song as a blade and asked her heart out, willing to use her own strength to break the ancient saying that "mermaids are ruthless and should be treated as tools". However, fate is like a sea wave, and the road to redemption is full of treachery and bloodstains. She formed a destiny with a love-ending fairy, trying to make the world witness the love of mermaids and clear away the eternal grievances. The story is intertwined with human greed and self-awakening. Lan Ge awakens the hearts of the world with its tragic song, and finally composes a natural song in which a mermaid saves herself and reshapes love and morality in the magnificent world of immortals.
