Due to the large-scale discharge of sewage by humans, the ocean world has faced an apocalyptic crisis. Corals, sea anemones, and reefs have been eroded by nuclear wastewater. Fish schools in the ocean have begun mass migrations in search of a chance for survival. The previous whale king Setia swallowed a large amount of sewage to protect his subjects and died for his country. His whale bones fell into the whale bone forest and disappeared. The oracle told the people of the Ocean Kingdom that only by finding Mira, the witch who holds the water purification orb in the whale bone forest, can they find a way to restore their homeland. Setia only left behind a young whale, Moby, and a group of fish such as clownfish began to fight against the sewage to protect the next whale king. Under the erosion of sewage, the subjects of the Ocean Kingdom began to die and mutate. The number of kind-hearted tribesmen decreased sharply, and some tribesmen were even eroded by the sewage and started killing each other. The clown fish Orsinia was frightened by these changes, but with the help of everyone, Orsinia still took Moby to find Mira in the whalebone forest, only to find that the water purification orb had long been snatched by humans. Without the water purification orb, the subjects did not know how long this last pure land could last, and the countdown clock of life never stopped...
Purpose: Protecting the environment is everyone's responsibility