A prehistoric ape-like creature, dubbed the Schlockthropus, emerges from hiding and embarks on a rampage through a small American town. This creature, having been preserved for over 20 million years, comes across as both terrifying and oddly human-like. As Schlock wreaks havoc, residents of the town are baffled and terrified by the mysterious attacks, prompting local authorities to investigate the strange occurrences. Meanwhile, a blind girl named Mindy befriends Schlock, unaware of his dangerous nature due to her inability to see him. Her innocent interactions with the creature provide moments of surprising tenderness and comedy amidst the chaos.

The town's police force and scientists rally together to hunt down the beast, leading to a series of misadventures and comedic chases. As Schlock continues his rampage, he finds himself in increasingly absurd situations, blending terror with humor. The authorities grow more desperate as they grapple with their inability to contain or understand the creature. With each bizarre encounter escalating tensions and absurdity, the film builds up to a climax that combines elements of horror and satire, leaving viewers both amused and on edge as they await the final resolution.