| EP# | English title Japanese title | Air Date | |||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| J# | E# | Japan | |||||||||||||||||||||||||
| United States | United Kingdom | ||||||||||||||||||||||||||
| 604 | 598 | "Gateway to Ruin!" (The Ruins of Mt. Tengan! Team Galaxy's Conspiracy!!) "Tenganzan no Iseki! Ginga-dan no Inbō!!" (テンガン山の遺跡！ギンガ団の陰謀!!) | July 23, 2009 | December 19, 2009 | TBA |
| Ash and friends are on their way to Lilypad Town where Dawn's next contest will be held. They arrive at Mt. Coronet, the massive mountain that divides the Sinnoh region in half. The mountain also divides the region's Pokémon, like Shellos. The Blue and Pink Shellos have ended up on the opposite side of the mountain, and while trying to figure out why, Piplup falls into an artificial tunnel, and when they go to rescue it, they come across something sinister. | |||||
