The world having turned into a barren wasteland after The Crash, humans now live in small colonies, spending their days in fear of monsters called Deadhezz which roam rampant outside. However, there are those known as ‘Hunters’ who eradicate these monsters as a living. Maria and Kiriko are two such Hunters who are based in Carrier Town. One day, a girl named Nena requested their services as her bodyguards. They readily accepted, excited for a new adventure with high reward, but what lies in store for them?