A maze-like apartment complex known as the Skygrazer sits at the center of a series of events that seem to have nothing in common: adolescent obsessions, impossible technology, strange beings, and unexplained deaths. Rookie detective Saeko Sakuraba begins investigating the building and discovers that its residents and mysteries intersect in ways that refuse to follow a single genre or obvious pattern. Solving the case means understanding the place itself as much as any one crime.