Flyboys is a movie about a group of young Americans who volunteered to join the French Air Force in World War I, before the US entered the war. They became part of the Lafayette Escadrille, a squadron of fighter pilots who faced the German enemy in the skies. The movie follows their training, their battles, and their personal lives, as they experience friendship, love, loss, and courage. The movie is based on real events and characters, and shows the challenges and dangers of aerial warfare in the early 20th century.