Neko Tsukahara wakes up in a vast, desolate wilderness, where the twilight stretches to the horizon; she has no memory of who she is or how she ended up there; suddenly, the Tasogare Hotel appears behind her.

Under the guidance of Haruto Atori, Neko Tsukahara begins working at the Tasogare Hotel. During her shift, a guest with a gambling addiction asks Neko to gather a group of people to play mahjong.

Neko Tsukahara volunteers to assist a new guest-a man with a pansy-shaped head and an unsettling vibe; Neko searches for clues to help him recover his memories; she soon discovers he was a medical student and part-time detective named Masaki Osoto.

Neko Tsukahara and Haruto Atori guide two new guests to their rooms; one girl wears a kendo helmet and the other holds a mobile phone as they examine objects found in the rooms.

Neko and Ruri escort a loving couple to an ocean-view suite, where the woman has a sudden realization; while searching, they find a Cinderella script, sparking memories of the couple's past, though their fate remains unknown.

A rocket-headed boy and a black cat wander into Tasokare Hotel; the boy chases the cat around, but never catches it; the cat keeps its distance yet stays close, silently watching over him; a record-headed guest appears and cheers up the boy.