Commander François Medusa, supreme ruler of the minuscule marine creatures we call plankton, has decided to spread his empire to the four corners of the planet. And so he has come up with an infallible plan he's dubbed: "Operation Global Warming." The "Tentacle Trio" has been put in charge of this operation on the little beach of Oostduinkerke, on the North Sea. These three soldiers are amongst the select few, from an army of 35 billion, who have mastered the ability to walk and breathe on land...Except that they're not very smart, not very well informed, not very well organized, not very talented and most of all, not very big.