Pokémon Season 5 Episode 44

Immediately after entering an area considered sacrosanct by the Dragon Pokémon that dwell there, Team Rocket sets off a chain of events that enrages the area's Dragonite guardian. Unchecked, this Dragon's rage threatens to destroy the area entirely and all those who dwell within it—including not only Team Rocket, but also Clair, the gym leader, and Ash and party.