Sechzehneichen.

A young couple moves to a gated community (named Sechzehneichen), where soon the creative wife (a photographer) gets bored and the husband joins a secret mens' club. All the other wives seem strangely conservative and shallow. Basically a thinly veiled take on the Stepford Wives, just without any bit of humor or atmosphere, but instead filled with the sterile, unflinching and dry seriousness that makes watching a lot of our German films such a drag and a miserable experience.