This gripping war film is based on real events. The year is 1940 and Britain is struggling to stop Hitler's advancement. In an important air battle, the Royal Air Force is forced to ask pilots from the Polish air defense for help. Initially, the new acquisitions are met with skepticism and racism, but soon it turns out that the Polish pilots are much more skilled than their British colleagues. With, among others, Iwan Rheon from Game of Thrones.