Professor Siem Sigerius - maths genius, jazz lover, judo champion, Renaissance man. When Aaron meets his girlfriend Joni's family for the first time, her multitalented father could hardly be a more intimidating figure, but somehow the underachieving photographer manages to bluff his way to a friendship with the paterfamilias. With his feet under the table at the beautiful Sigerius farmhouse, Aaron feels part of the family. A perfect family.

Until, that is, things start to go wrong in a very big way. A cataclysmic explosion in a firework factory, the advent of internet pornography, the reappearance of a forgotten murderer and a jet-black wig-all play a role in the spectacular fragmentation of the Sigerius clan... and of Aaron's fragile psyche