During the summer of 1940, the skies over Great Britain are alive with snarling, twisting, darting fighters and bombers. The Battle of Britain is at its peak, and the Royal Air Force is struggling for its very existence. In the long-awaited sequel to "Dragon Flight, " Andy Duncan, a twenty-one-year-old Canadian airman and son of World War I ace Jimmy Duncan, is focused on piloting a Supermarine Spifire against the best that Nazi Germany can throw at the beleaguered English homeland. But when Duncan needs to hitch a van ride to the white cliffs where his squadron is stationed, the driver is Emily Smith-Barton, a buxom strawberry blonde corporal in the Women's Auxiliary Air Force. Duncan is completely captivated by her loveliness and, as Emily enters his chaotic life, hopes of a brighter future dangle like a tantalizing carrot before him. But Duncan's dream of a more peaceful existence will only become reality if he and the fighter boys of the 689 Squadron can survive the brutal killing fields five miles above a patchwork countryside that has suddenly become more precious than gold.