Mårtensson is a school teacher - his work is a nightmare, he is scared of children, both at work and in his private life. He can neither communicate with his pupils nor control them - we watch him being destroyed, with pity and terror.During a walk in the harbour Mårtensson meets an old school friend, a photographer, at work. Mårtensson talks openly to his old friend of his fears: his mistake is, he says, that he is on the side of the pupils against himself.Mårtensson is on duty when one of his pupils is hit by a truck - his sense of guilt is reawakened and his nightmares return.Nightmares and reality melt to form an entity. Mårtensson is a school teacher - his work is a nightmare, he is scared of children, both at work and in his private life. He can neither communicate with his pupils nor control them - we watch him being destroyed, with pity and terror.During a walk in the harbour Mårtensson meets an old school friend, a photographer, at work. Mårtensson talks openly to his old friend of his fears: his mistake is, he says, that he is on the side of the pupils against himself.Mårtensson is on duty when one of his pupils is hit by a truck - his sense of guilt is reawakened and his nightmares return.Nightmares and reality melt to form an entity.