Ever since he inherited his parents? summer house, Ramon spends all his weekends there and devotes long hours to an unusual pastime: from the terrace, he watches the different people that pass by or stop at a bench on the riverbank and describes them in a notebook. As such, he becomes a spectator of dull moments in people?s lives. But this seemingly innocent game takes a dark and dangerous turn the day that a mysterious woman with a sports bag stops at the riverbank. When she continues on her way, she leaves the bag and Ramon is not sure whether to tell her or not. Did she leave it there on purpose? Will she come back to get it? Sometimes, a bad decision can turn one?s life into a nightmare.