Strange hauntings are plaguing the apartment where Aoi lives, and its tenants left one-by-one. When Ruli was invited by Aoi to investigate, they mysteriously land into a 13.5 floor and find a mysterious space where Aoi is left alone to be attacked by hordes of lesser Digimon and saved by Espimon. When Ruli invites the other protagonists and try to fight the Digimon behind the hauntings, the Ultimate-level angel Digimon ClavisAngemon, they find themselves completely outmatched by his One-Hit Kill attacks with only Espimon left to save them.
- The Bluebeard: In ClavisAngemon's study files section, Ruli tells a story about the titular character to freak Kiyoshiro out.
- Breaking Old Trends: ClavisAngemon is both the first Angel Digimon troublemaker the protagonists dealt with and unlike other Ultimates he's more at line with a standard misguided Digimon than a mass murderer or kidnapper.
- Rewatch Bonus: The following episode implies that ClavisAngemon was actually escorting Digimon refugees away from the Black Corrosion GulusGammamon left over in the Digital World.
