A scientist who is a former colleague of Hiro’s mom drops by. She takes everyone to an insect exhibit at the mall, but they’re attacked by a highly intelligent Digimon who’s hungry for their brains.

Angoramon runs into an old friend from the Digital World, Digitamamon. Digitamamon is living alone in an empty mansion. The gang all go to visit, but they soon learn that the mansion is known as a man-eating mansion.