Randolph Tiefenthaler insists he had a normal childhood, though he grew up with a father who kept thirty loaded guns in the house. Now he has an attractive, intelligent wife and two children, enjoys modest success as an architect, and has just moved into a beautiful flat in a respectable part of Berlin. Life seems perfect - until his wife, Rebecca, meets the man living in the basement below.Their downstairs neighbor is friendly at first, but soon he starts to frighten them - and when Randolph fails to act, the situation spins dangerously out of control.
