After Tai and Agumon return to the Digital World, they find Tokomon, but not T.K. Time passes in the Digiworld much faster then the real world, and Tokomon explains alot has happened since they were warped away. Apparently T.K. was in an amusement park with a strange Digimon named DemiDevimon, who was secretly working for another evil Digimon. After Patamon and DemiDevimon go toe-to-toe, T.K. and Patamon become friends again, and the first step towards reuniting the group begins.
—killer_pikachu