Horî Naito Dejimon Daishûgô!

On Christmas Eve, the younger DigiDestined hold a party at Ken's apartment while the older kids attend Matt's concert. Digimon suddenly arrive in the Real World interrupt the concert, forcing the DigiDestined to send them back into the Digital World. The DigiDestined wake up the next day to find that Control Spires and Digimon are appearing worldwide.