Digimon Kaiser is in a hurry to build a prison in the Crystal world, the icy northern region of the DigiWorld. Gomamon ends up becoming hostage to Digimon Kaiser while cover for the other Digimon, and calls for Jou's help. Jou and the others, now in the DigiWorld, are confronted by Frigimon, a monster adequately adapted to the icy climate. But they must get to the Control Spire in the hurry!