In The Hydora Campaign, Lieutenant Razor's fearless Troopers land on the aquatic Hydora planet, hoping to find -and extinguish - the enemy bugs' home base. But soon, they're trapped inside a cave-like insect and attacked by swarms of gigantic, vicious mosquitoes. And when they find the terrifying Mother Insect who controls the bug universe, they realise its only intention is to kill off the entire human race. Now, the Troopers have found the source of the problem - but can they even hope to control it?