This article is about an episode of the Pokémon anime that has not been dubbed into English. As such, its coverage may contain romanized Japanese names, rather than dub names.
(Japanese: お宝の謎!無人島アドベンチャー!!Mystery of the Treasure! Deserted Island Adventure!!) is the 135th episode of the Best Wishes series, and the 792nd episode of the Pokémon anime. It first aired in Japan on July 25, 2013.
Spoiler warning: this article may contain major plot or ending details.
Ash and co. are joined by Alexa, an expert reporter from the Kalos region, and her Pokémon Helioptile and Gogoat to search for a Noivern. They stop by an island rumored to have a secret treasure. What mysterious treasures will they find there? And is there a theme to the Pokémon on this island?