After helping a rich couple with their car, they invite themselves to a party. The people at the party seem bored and looking for kicks, unaware of the two madmen in their midst. When the tension is broken, the film descents into an unrelenting collection of repugnant moments of humiliation, rape, mutilation, and murder.

In "House On The Edge Of The Park", as with his genuinely challenging "Cannibal Holocaust", director Ruggero Deodato pushes the limits of acceptable content in film further than ever.