A Question of Trust Digimon: Digital Monsters : Season 3 Episode 8

Impmon is scaring couples at night in the park, but Takato suspects Guilmon of causing this trouble. Impmon takes Guilmon out and when Takato finds him missing he suspects more of him. When Guilmon comes back, not knowing what's happening, he says he scared a couple and Takato gets really mad at him. Later, Devidramon appears and fights Guilmon. Takato forgives him after finding out about Impmon and Guilmon digivolves to Growlmon and defeats Devidramon.