The movie tells the story of a Polish soldier Franciszek Dolas, who - as a result of comical coincidences - is convinced that he started the Second World War. Trying to redeem himself at all costs, he constantly gets into new trouble. In doing so, he finds himself on different war fronts (Yugoslavia, Mediterranean Sea, Near East, Italy) and eventually returns to Poland.
On the night of August 31, 1939, Dolas, from a platoon reinforcing a train station on the German border, falls asleep in a train car and unknowingly crosses into Germany. The moment he shoots a German, who he thinks is a saboteur, the German invasion of Poland begins, and Dolas is convinced it was his fault. He is taken to Stalag POW camp, the first destination in his odyssey around Europe.
After escaping across Europe from Stalag camp, Dolas's ride to Cyprus is stopped when his ship in sunk by an Italian submarine. Although he and some of his fellow sailors are rescued by an Allied ship, they find themselves conscripted into the French Foreign Legion in Beirut, Dolas becoming a cook.
Disguised as an Italian medic, Dolas finds himself on a ship evacuating wounded Axis soldiers to Italy. He leaves the ship disguised as a Nazi soldier, but is found out, declared a deserter and sent to the Eastern Front. However, on the flight to Russia, he is able to escape with a parachute, and finds himself back in Poland, now occupied by Nazis.
