Spitfire and the Wonderbolts have always been considered the best fliers in all of Equestria if not the world. Their air acrobatics and death-defying stunts have earned them a reputation as some of the bravest ponies ever seen.

Though is bravery really defined by your willingness to perform stunts?

Spitfire and her squadron, Squadron No. 1, with Soarin, Fleetfoot, and of course new recruit Rainbow Dash, after accidentally flying into a strange cloud, find themselves in a world where the bravery of some flyers is measured by their coolness under pressure and their ability to stay focused no matter what the situation. Soon, the Wonderbolts will find themselves flying with the fliers that braved the inferno of the night raids over Nazi Germany from 1943 to 1945. This is the story of when the Wonderbolts met the Bomber Boys.

(Cover art is by Piotr Forkasiewicz. It is titled "Toward the Inferno II")