The Strange Floor Strange events occurring at Aoi's apartment are causing people to move away, with it being rumored to be haunted. Espimon decides to move out of Hiro's room in order to find the real Hiro and enters Aoi's apartment, where he sees a room filled with sand. Ruli goes to Aoi's apartment to investigate, but a Hiyarimon calling the elevator causes Aoi to become trapped on the 13.5th floor. A voice asks Aoi for a key, but, as she is unable to give the correct answer, keyholes start appearing in her body. The group goes to investigate the building and learn that Digimon are living in rooms abandoned by humans...