Mormon brothers Hyrum and Bill from Provo, Utah, join the US Army in 1918 looking for glory and adventure. Bill is an observer in a fighter plane, while Hyrum serves in the infantry. While wounded, Hyrum makes friends with a British war widow, and later, after being severely wounded, is nursed by his friend's sister, a recent covert to the LDS faith who heals him spiritually as well. The battles rage dangerous and deadly. Will the brothers make it back to Provo? Only time will tell.