WereGarurumon's Diner - S1.E23

Matt finds Joe working at Digitamamon's diner to pay off his debt and agrees to help. DemiDevimon bribes Digitamamon to keep them while setting off accidents that makes Matt question Joe. However, once Digitamamon's scheme is exposed, they battle him with Tai and T.K. Joe sacrifices himself to save T.K., leading Matt to see him as a true friend and allowing Garurumon to Digivolve into WereGarurumon. After Digitamamon's defeat, the group splits up and continue their search for the remaining DigiDestined.