In fact, the feature film, whose cast was led by Lee Montgomery, Joseph Campanella and Arthur O’Connell, was a sequel to another released the previous year entitled “Willard.”
When a Los Angeles police detective investigates the murder of a man named Willard, he discovers, in disbelief and horror, that the murder has been committed by a group of killer rats.
The rats are led by Ben, a giant rat with great intelligence.