A dangerously disturbed Vietnam veteran struggles with life 15 years after his return home, and slowly falls into insanity from his gritty urban lifestyle.

At the Tromaville Institute of Technology's nuclear plant, Prof. Holt has perfected "subhumanoids": living beings without emotions who perform menial tasks. When school reporter Roger Smith meets a beautiful subhumanoid named Victoria, they fall in love and he becomes determined to save her and the school from a giant mutant squirrel, Tromie.