This is a film shows the process of a Polaroid picture in three distances. Once I texted a second hand Polaroid camera with flash, for reason of uncontrollable, suddenly I shot a map of London Underground with flash. During the processing, the image was displayed more and more clearer, and the heart of the map was over exposure. When I was waiting for the picture display completely, I have some imagination beyond the picture, such as the marching of the army, vein, city and time, even the over exposure part inspired me slumber of the baby. After that, I decided to shot this film for recording the picture and the moment, and the music in the film was recorded by myself and also inspired by the Polaroid picture I took in first time.