High schooler Tetsu Misato is hardworking, frugal, and easily scared, but he commits to a part-time job at the mansion on the hill-the one that's rumored to be haunted. As he toils away, he notices a building separate from the estate, and the mysterious girl who lives within it: Shizu Karasawa. Tetsu slowly becomes enchanted by Shizu's lonely smile, but by their second encounter, he quickly finds himself in over his head. There's an unsettling feeling he can't quite shake, but there's love there, too.