Sludge is sick of the Clean Team foiling his attempts to turn Electropolis into his own putrid playground. So he hatches his most cunning plan yet. He sends one of the Snot-Bots in disguise as a rookie bot named Bit-Con to join his enemies, the Clean Team. It doesn't take long for the sickening spy to turn the Clean Team's headquarters into a slime-covered disaster. Will the defenders of cleanliness discover the spy in their midst? Or will Sludge's crafty con work to finally defeat his fearless foes?