The Crest of Light - S1.E49

Kari recovers, and, along with Sora and T.K., begins searching for the others. Encountering WaruMonzaemon, Kari frees the Numemon he has enslaved and her Crest re-energizes the Digimon. Tai and Izzy are found by Andromon, and once they are reunited, they battle Machinedramon. After Numemon sacrifice themselves to save Kari, WarGreymon destroys Machinedramon.