A young photographer has fallen in love with his girlfriend's sister. Nobody knows quite what to do. A stylish variation on the problems of triolism made with striking stability of style and a great feeling for mise-en-scène. The film provides an impressive mixture of stylised camera angles and realism, by filming taut and geometrically in simple interiors and existing locations. Her self-confidently designed, naturally acted everyday drama made German critics compare it with the greats from film history.