Waking up one day in his own bed, Jurek Kiler is arrested by an anti-terrorist squad. The police take him for a dangerous criminal, because a rifle used to kill a man the previous day has been found in the boot of his taxi. Jurek ends up in prison, where he immediately becomes a star among the criminals. His protests that he is merely a taxi driver are to no avail. Commissioner Ryba cannot be persuaded: he is absolutely certain that he has caught a serial killer wanted across Europe. When Siara, a big fish in the criminal underworld, hears of Kiler's arrest, he organises a lightning operation and snatches him out of police hands. Not realising who he is really dealing with, he gives him another job. Rumours of Kiler's incredible exploits spread ever further. Meanwhile, Jurek comes to the conclusion that clearing up the misunderstanding would not be in his interest at all. With the help of a journalist, he puts a cunning plan into action...