The Captive Digimon

'''Tai joins the group in their mission to rescue Agumon. Meanwhile, Ken tries to figure out why he cannot control Agumon at his Ultimate stage.'''

Synopsis
Learning that Agumon is enslaved, Tai joins the DigiDestined’s team to get back Agumon. Tentomon reveals that Agumon is being held in Rail Town, where Ken realizes that the Dark Rings aren’t strong enough to control Ultimate level Digimon. He creates the Dark Spiral which is three times stronger than the rings. Wormmon doesn’t like to see Agumon suffer so he sets him free so Ken could use him instead. Agumon meets up with Tai but their reunion is cut short when the Emperor recaptures Agumon with a Dark Spiral, and makes Agumon dark digivolve in to Metal Greymon. He defeats the DigiDestined and leaves. Tai blames himself for letting Agumon down when Matt and Yolei come to help him realze it really wasn’t his fault.

Digivolutions
(Number indicates order of occurrence.)