Join Kernel Kleanup, the heroic mascot of the Western Exterminator Company, as he takes on the dastardly Ronnie the Super Rat! After Ronnie bombards Earth with a pest beam from his moon base, it's up to you to help Kernel save the day. Armed with his trusty hammer, Kernel must smash his way through various levels filled with creepy crawlies like spiders, ants, fireflies, worms, and even some unexpected foes like sharks and jellyfish.

The game features nine exciting side-scrolling platform levels, each offering a new challenge. Look out for special twists in levels 5, 7, and 8.1, where you'll take to the skies in a helicopter, dive into underwater adventures, and explore the moon's surface. Keep track of your progress with a handy status report showing how many bugs are left to defeat. Some vanquished enemies will drop hearts, giving you extra lives to continue your mission. In the thrilling final level, you'll need to use your wits to find a key card that unlocks the door to Ronnie's lair. Get ready for a fun-filled pest-busting adventure!