When Pangu created the world, humans lived on land and fish-men lived under the sea.
Due to the lack of many resources under the sea, the fish-men had to go out of the water to exchange with humans by weaving shark yarn. These fish-men are called "pathfinders". There are records about the sharks in "The Classic of Mountains and Seas" and "Sou Shen Ji". The sharks here refer to the fish-men.
At the end of the Jin Dynasty, humans began to hunt and kill the murlocs for their own selfish purposes. The captured murlocs were made into long pearls and sold to the nobles at a high price, and they were often placed in the tombs of the nobles. After the Jin Dynasty, no one saw the fish-man again, and the fish-man gradually became a legend in the world.
The surviving fishmen all live on the fishman island at the bottom of the South China Sea. "My" grandmother, Sima Wan'er, is the oldest surviving fish-man on Fish-Man Island and the only survivor of "Pathfinder".
"I", Sima Wan'er, grew up in Tomb Mountain and learned many secrets about Fish-Man Island and the human world. I also learned about my life experience and the responsibilities I shouldered.
More than a thousand years ago, Sima Dewen, the last imperial brother of the Jin Dynasty, offended Liu Yu for protecting the "Pathfinder". After Liu Yu ascended the throne, he destroyed the nine Sima Dewen clans, and his grandmother changed her surname to Sima. Our Fish-Man Island is facing a major crisis. A team of "New Pathfinders" formed by highly capable people go out to sea and enter the human world to find an item that must be used on the island.
"I", based on the clues provided by my grandmother, went through many hardships to find the reincarnation of Sima Dewen, Xie Zhonghan. In the process of getting along with the Xie brothers, I discovered the poignant love story between Xie Boxian, the reincarnation of Sima Dezong, and his grandmother, and the misunderstanding between the two.
Purpose: All living beings are equal