When you have a hole in the top of your head from which your thoughts cascade it doesn't pay to think too hard. The bigger the thought, the more it hurts as Arnold soon discovers.
A dark tale of obsession and loneliness about a man searching for physical and emotional completeness. It is only when he thinks he has achieved this goal through the unwilling coalescence of his neighbour that he begins to understand the painful, irresolvable nature of his obsession.