In the near future, where new technologies have been developed.
On social networking sites, rumors of a mysterious phenomenon, known as "Hologram Ghosts," are being circulated.
Hiro Amanokawa, a first-year junior high school student, activates a mysterious device called "Digivice," which was left behind by his father, allowing him to see unknown creatures called "Digimon," that are not visible to ordinary people.
From the day he meets Gammamon, a mischievous Digimon entrusted to him by his father, Hiro gets caught up in a variety of strange phenomenon. The "Sewn-lip Man," who steals humans’ time, and the "Mummy Man," who wanders around at night and kidnaps people...
Hologram Ghosts are everywhere, and they are out to get us. Thus begins the untold story, of a world hidden in secrets. Hiro, along with Gammamon and their friends, enter the mysterious world where Digimon live.