A virtual world was created by the present-day network called the 'Digital World'. The 'Digital Monster', which is a digital life object, was born, and the host computer 'Yggdrasil' managedthe different Digital World areas. However, it developed the 'X-Program' of fear to eliminate all Digimon in the old world and develop a new Digital World for only certain Digimon... Now, the greatest crisis ever approaches the Digital World!