A group of convicts called the "Hooligan Sisters" escape custody on Planet Land. As they escape, one of them breaks open a canister, which causes Planet Land to become infested with monsters. The "Galactic Penal Squad" contact "cybernetic peace officer" Patrica Wagon (voiced by Stephanie Komure), authorizing the use of her Siren Helmet and Pellet Shooter, in order to capture the criminals. Helping her along the way are General Gendarmor, a mechnaical armor that can extract her from battles, Ugly Twitching Dog (U.T.D), who can create reload points, and HQ, who are monitoring her actions