A couple of detectives (Jan-Michael Vincent and Lee Majors II) are investigating the disappearances and get a hot tip (from the kids) that Gregory is behind it. They search Gregory's ice cream parlour but for some reason do not look in his ice cream van. That isn't the only rather baffling bit of "police" work they do. They go to the asylum, which Gregory was once at, and find freakish scenes of torture and horror, even having to shoot their way out. And then it seems to be all forgotten!
Trashy films like this often make little sense, this makes even less than most. The horror is rather over the top gruesome (including an ice ball inside an ice cream) and the body count is pretty high. There are also a number of intriguing cameos including David Warner as a vicar! The film is a mess, as much a mess as the cops leave Gregory's ice cream parlour in, but it is rather compelling.