Pacifism surely wasn't an easy ideology to follow for someone like Princess Acelia of Carmine, who would become the future empress of the most powerful empire of their world. With tremendous power always arose conflict and as the leader and protecter of so many lives, sometimes violence was unavoidable. But there was a single thing she hated even more than war and violence: to marry someone that is already in love with another. When her engagement to prince of Celadon, the empire she should be ruiling very soon, gets postponed again and rumers arrise that her fiancé is in lvoe with a lady from the army, she sees only one option: To enter the military in disguise and find out the truth behind the rumors. But what will she find when she finally becomes a member of the special infiltration unit? And what will happen to the girl that grew up shielded, when she is faced with the violence, pain and destruction of war?