S1·E51 The Crest of Friendship

Piedmon and WarGreymon battle, but WarGreymon cannot stop him alone. Matt falls into a dark cave, but he escapes once he confronts his feelings. After rescuing Sora from her dark cave, they return with Joe. Matt makes up with Tai, activating the Crest of Friendship. With all of the DigiDestined but Mimi reunited, both WarGreymon and MetalGarurumon prepare to battle Piedmon.