A film based on Arkady Fiedler’s bestselling book and the true story of Polish pilots, heroes ofthe Battle of Britain. Jan Zumbach, a.k.a. Donald, recovers from a plane crash in a sanatorium when World War II breaks out, forcing him to leave the country. A similar fate awaits the heroicflight instructor Witold Urbanowicz. Both of them move to Great Britain, to carry on the fightagainst the enemy in RAF. Soon enough, their heroic deeds catch the attention of commanders and inspire 303 Squadron – the elite and predomi- nantly Polish air force unit. At first underestimated and mocked, the team quickly wins respect thanks to the outstandingpatriotism and bravery of its members.