This is the story of Miho Nishizumi in her elementary school days, taking place six years prior to the events in Girls und Panzer. Having been raised in a prestigious household that adheres strictly to the values of tankery, life isn't easy for young Miho. With an older sister who has already risen to great heights, Miho has some very large shoes to fill. Together with a group of new friends, and a blossoming interest in tankery, Miho will set out on a road that may very well change her future.