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The low-budget "Killer Tomatoes" series closed with this fourth chapter starring a returning John Astin as the resurrected Professor Gangrene, who resurfaces in France to continue his ongoing plot for world domination through the care and maintenance of the title fruit. Hoping to bank on his sidekick's resemblance to King Louis XVII (long prophesied to return to his throne), Gangrene sends his armies of tomato-monsters (who sport snarling, feral faces and one-liners this time out) to eliminate those who stand in his way. Among them is the nominal "hero," a has-been actor (Marc Price) spurred by the vacillating affections of winsome Parisian Marie (Angela Visser) to join the French army against the Juicy Red Menace.