Two friends with a love for aviation and adventure decide to design and build their own tiny aircraft. As if this isn’t challenge enough, they also want to fly the plane to Oshkosh, the world’s greatest air show. With the clock ticking down, they rush to complete the build of the plucky little plane that will become known as The Sling. With very little test flying done, they take off into the night… but will it be a bumpy landing?