Prywatne sledztwo

After his wife and children are killed in an accident caused by a drunken truck driver, a distraught man vows revenge. Unhappy with the indifference of the police, he covers the whole country on his motorbike in search of the driver. A series of brutal murders of truck drivers casts suspicion on him, but in the end he catches his family's killer and the murderer of truck drivers is apprehended.