Erza is a normal girl who wants to live her life as a warrior. But in her town, girls aren't allow to do men work. Erza father get a letter saying that he has to come fight in the war, to save China. Erza doesn't allow him to go, so instead of him taking the role, she takes the role to save China. She meets the king of China grandson (Jellall) who is the leader of the China war. Girls aren't allow to be in the war, so Erza goes by the name Hun. Will they discover that Erza is a girl? Love blossom?