The story takes place "just a little bit in the future," where rumors of strange occurrences called "hologram ghosts" are appearing online.

Hiro is able to see Digimon after activating a "Digivice" his father left him. Together with the Digimon Gammamon, they investigate the unusual phenomena happening around them in their everyday lives, and slowly step foot into the world of Digimon.

[Source: Anime News Network]