In the late 20th century, a large-scale
nuclear war ends in a
nuclear holocaust. In the aftermath, Earth has become a
post-apocalyptic wasteland, where, due to
fallout, most humans have been rendered sterile. As a result, the government places a high priority on those who can still breed. Additionally, humanity now shares the planet with a race of mutant
amphibians, whom the government has exiled to the desert and prohibited from possessing firearms. Sam Hell, a nomadic scavenger, is recruited by the provincial government to serve as a human
stud—they tracked him down by following a trail of pregnant women left in his wake from his travels, and have determined that he is one of few remaining fertile men in existence. A protective codpiece that monitors Hell's physiosexual condition is affixed to his groin and secured by an
electronic lock. Upon learning that the mutant amphibians have armed themselves and taken a group of fertile human women hostage, Hell is ordered to infiltrate the mutant city (derogatorily referred to as "Frogtown") and rescue and impregnate the women. He is accompanied by nurse Spangle and corporal Centinella. During their journey to Frogtown, Hell attempts to escape, but quickly learns that the codpiece will shock his genitals if he strays too far from Spangle. Despite their rocky start and Spangle's initial cold demeanor, the pair grow closer during the journey and eventually fall in love. When they reach Frogtown, everyone involved is captured. The frogs' second-in-command, Bull, tortures Hell and attempts to remove the codpiece for its technology. Meanwhile, a slightly drugged Spangle is forced to work as a slave and dance for the frogs' Commander Toty. Proving more successful than she had wished, the nurse soon finds herself at the mercy of the aroused commander. However, with the codpiece now removed (Bull finally removed it with a chainsaw, but it exploded and killed him), the escaped Hell rescues her along with the group of fertile women held captive. ==Cast==