The set is based on an unknown island far away, inhabited only by Delta Species Pokémon. It marks the final appearance of Delta Species Pokémon, after they debuted in EX Delta Species, returned in EX Holon Phantoms, and most recently appeared in EX Crystal Guardians in August 2006.

Journey further than any Trainer has ever been when you explore the islands where powerful Dragon Pokémon rule. In EX Dragon Frontiers you'll find rare Pokémon-ex Delta Species, long awaited Pokémon-*, and new ways to do battle like you've never seen before.