Wild In The Streets!

While Ash trains for his rematch at the Oreburgh Gym, Team Rocket breaks into the museum and steals the machine that restores Pokémon Fossils! They soon release an angry Aerodactyl into the city, followed by other ancient Pokémon. Brock, Ash, and Roark manage to defeat the others (and Roark's Cranidos evolves into Rampardos during the battle), but the Flying type Aerodactyl proves too much for them.