The movie Big Fish and Begonia told a story about love and sacrifice. The background of the story was a fictional fantasy world called Big Fish Begonia. This world was created by a mysterious elder who created a perfect ecosystem that allowed this world to prosper. However, this world also had a fatal flaw, which was the existence of humans. The protagonist of the story was a young man named Kun. He was a marine creature with infinite vitality and was also the guardian of the balance of this world. Kun and his girlfriend Qiu were trapped in this world. They had to work together to maintain the balance of this world. The climax of the story happened when Kun and Qiu decided to save the world together. They met a mysterious female mage named Haitang. Haitang told Kun and Qiu that they had to sacrifice their lives to save the world. Kun and Qiu felt very painful, but they still decided to follow Haitang's words and sacrifice their lives to save the world. In the end, Kun and Qiu successfully saved the world, but they both disappeared. Haitang left behind a magic ball that could help any living creature return to their homeland. Kun and Qiu's sacrifice saved the world and allowed them to return to human life.