The Twelve Apostles are tasked with hunting down and eliminating the world's vampires. Gil, harboring a deep resentment toward vampires and the pure-bloods who created them, has already cleared the first two stages of the exam to join their ranks. For the final, third stage, he is paired with a partner named Luna. Together, they must journey to a nearby town to slay a vampire called Aran. Will Gil succeed in passing his exam and earning his place as an apostle? And just who is this girl, Luna?