The group continue on their way and notice people digging in Grandpa Canyon. Gary shows up for this too. Meanwhile, Team Rocket plants bombs in the canyon. Ash notices this just as Meowth lights the fuse. Ash and Squirtle chase it trying to put out the fuse. It gets to the end and Pikachu shoots an electric beam at it in panic. The blast goes off and they find themselves underground. They meet some ancient Pokémon who they thought to be extinct including an Aerodactyl who swoops up into the air with Ash. Charmeleon evolves into Charizard and chases after the Aerodactyl. Jigglypuff pops out and starts singing. Aerodactyl falls asleep and drops Ash. Ash is caught by Charizard who lands and falls asleep. Officer Jenny tells everyone that it was just a dream caused by Jigglypuff's song and sends the people on their way. Ash gets an egg from the site, which Brock steals from him to take care of.