Mr. Mallet, the Guardian of the Aquarian world, had been noticing a decline in the number of aquatic creatures in the ocean. He knew that something was wrong and decided to investigate. He discovered that the ocean was becoming increasingly polluted, and many creatures were dying. He knew that he had to find a solution and decided to search for a new home for the Aquarian world.

He set out on a new adventure, accompanied by Lila and a group of Aquarians. They explored the vast ocean, encountering new creatures and discovering new places. They finally came across a perfect location for the Aquarian world - a hidden underwater cave system with a clean and abundant source of water.