Lilo the sea monster lived in the sea. He used to be evil, bad and angry, because the other animals made fun of him because he looked different from them. Together with his one and only friend, he travelled far away and discovered that the water was much cleaner there than at home. Therefore, they returned back home to clean the lakes and the sea. They cleaned and cleaned and cleaned – and the other sea creatures helped them. The waters now became perfect habitats for animals and Lilo was no longer evil or angry, because he was now treated as a hero by the other sea creatures.