 P. is a sad, lonely man. Through the window of a city bus, he observes the scarce night traffic until a beautiful woman passes by him in the vehicle s corridor. Her name is Emma. They exchange glances. From then on, something changes in P. In the following days, they see each other again in the same bus. They begin a sensual game of looks and insinuations, which is suddenly interrupted. Emma does not turn up any more. P. becomes anxious and decides to look for her.