This is an upgraded version of the original PSP game featuring an extended story and new characters.

13 years have passed since the events of Digimon World...this is equivalent to over 9000 Digi-Years (or 780 years) in the Digital World. Many changes has occurred to File Island, as its environment changes drastically, and the GIGO Company gains access of Infinity Mountain and converts it into the DigiTower for their new Internet game - Digital Monster. The top 3 ranked players of Digital Monster: Rank 3 player Taiga, Rank 2 player Nicolai Petrov, and the mysterious Rank 1 player Nyanko Tamer, are invited to a special online event for the game. However, when Taiga figures out the secret password which grants access to the event: "Re:Digitize," the three players, along with two other people, are sucked into their computers and transferred to File Island. For what purpose are they brought to the Digital World...?