The planet Eltria, having suffered severe desertification in the past, has all but been abandoned. Against her older sister's wishes, Kyrie Florian travels to Earth alongside her best friend, the AI Iris, in search of the key to their planet's regeneration. However, the only way to find it lies within the Tome of the Night Sky, leading them into conflict with Nanoha and her friends.
This psychedelic tour of life after death is seen entirely from the point of view of Oscar, a young American drug dealer and addict living in Tokyo with his prostitute sister, Linda. When Oscar is killed by police during a bust gone bad, his spirit journeys from the past -- where he sees his parents before their deaths -- to the present -- where he witnesses his own autopsy -- and then to the future, where he looks out for his sister from beyond the grave.
