In Earth's far future, the surface has become an uninhabitable dust-ridden wasteland, forcing the remains of humanity to take shelter underground. Some humans are Espers, gifted with the ability to control the dust, allowing them to survive the surface for limited periods. All humans lack much of their memories, and with no records for how Earth has become this way, Espers are sent to the surface to find artifacts of the past and to seek out the fabled Ruins, the only shared memory all humans have.

Arsenal (Bach: Invention 13 in A Minor, BWV 784) - Phantom Dust OST