The Giant Bacteria

The swamp-dwelling Dr. Viper mutates his fellow evildoer Morbulus into a hulking bacteria blob following Morbulus' humiliating defeat by the Swat Kats. The bacteria monster then goes on a rampage through Megakat City, inconveniently dividing into two anytime it's hit. Viper's plan is for the monsters to break into the supposedly impenetrable Megakat Biochemical Labs and steal Katalyst 99, a rare biochemical compound he wants. With normal weapons ineffective against the giant bacteria, the Swat Kats quickly discover that the creatures have one weakness: electricity.

Un criminal llamado Morbulus escapa a la captura, solo para ser convertido en un monstruo de bacterias por el villano Dr. Viper.