On social media, rumors of a mysterious phenomenon, known as "Hologram Ghosts," are spreading. Hiro Amanokawa, a first-year junior high school student, activates a mysterious device left behind by his father, and encounters a Digimon called Gammamon.

Ancient Egyptian mummies are on special display at the museum. There is a rumor that a huge man fully covered in bandages was witnessed kidnapping people in the area. Hiro and Gammamon decide to visit the museum to investigate.

Ruli and the gang are researching the paranormal sightings around the city when they stop to investigate a rumor about a haunted karaoke box. It’s said that if a certain song is sung, a mysterious and creepy voice begins to sing along with you.