Beneath the surface of a human body, trillions of cells live together in harmony; however, some wish to change that. A mysterious group of germs have infiltrated and are wreaking havoc on the Body. You play as Secret Agent T, an undercover T-Cell who must take down these foreign threats before they take over. Utilize the germ's own attacks against them by using your trusty Anti-Body Zapper! Defeat germs in this boss rush style game in order uncover who, or what, is behind Operation: Germ.