The Earth is in danger. The Evil Shark is out to take over the world by taking control over the Ocean motor which controls the water level and the temperature.
There is the scientist Jhiga Lala who is working to fulfil the wishes of the evil Shark Surmai who wants to create a serum to change all the land dwellers to sea creatures. And our own Larry, Marly and Charly are turned into sea creatures by the liquid created by Jhiga.
It’s an all out adventure for Doggy Don and company but they also have to save the world. Doggy Don and Colonel have to fight the evil shark to restore the balance of the ocean.