Cyrus, the brilliant and ruthless leader of Team Galactic, has set in motion his grand scheme to capture Dialga--a scheme with dire consequences for the land of Sinnoh. Hareta and his friends, together with several of Sinnoh's Gym Leaders, go all-out to put a stop to Cyrus and his minions. Things start getting tough, but those battling Team Galactic gain a major new ally when Hareta befriends a mysterious and amazing Pokémon.

Translated from the Japanese.