The film tells of one day in the life of a man, who now will never leave his cell. We observe not only routine activities, such as the prisoner performs every day. Primarily we accompany him in ceaseless consideration, of what he succeeded and what he failed to achieve before committing the crime, in his prayers and discussions with God, and also in returning to occurrences, which once seemed to him to be completely ordinary, and today seem distant and completely unreal.