The Gateway to Home Digimon: Digital Monsters : Season 1 Episode 27

Gennai appears and tells them that there is an eighth DigiDestined and that Myotismon is planning to go to the Real World with an army of evil Digimon to find the child. The DigiDestined infiltrate Myotismon's castle to stop him entering the Real World, but they fail when Gatomon distracts them with Devidramon.