The year is 2242. Kanata wants to be a Drifter and meets Noir, who is a dud Magus with no memories. However, because Noir excels in battle against the Enders, Kanata partners with her and discovers exactly what it takes to be a Drifter.

The time is 2242, Mankind escaped deep underground due to an unprecedented catastrophe called "Tears of the New Moon". After the incident of the collapse of the underground city-state "Amazia", he began to carry the hope of living on the surface again. People form villages called "Nests" in various places on the ground. Fight against the "Enders" that are still spreading on the ground as a threat to mankind, Adventurers mining "AO crystals", which are the energy resources necessary for the operation of the nest, People called him "Drifter". At the nest "Rock Town" where such drifters gather, Kanata, a young man who dreams of becoming a drifter someday, One day, he went on an expedition with the talented drifter Tokio. Discover a beautiful Magus sleeping in a decaying museum. By meeting the mysterious Magus "Noir", The story of destiny began to move little by little.