Pocket Monsters Diamond & Pearl: Arceus Choukoku no Jikuu e

Long ago, a meteor threatening to destroy the world was halted by Arceus, who was then injured and tended to by a figure known as Damos. In gratitude, Arceus gave Damos the Jewel of Life, formed from 16 parts of its body, with the condition that they be returned by a set date. When the parts were not returned, Arceus vowed to judge humans upon awakening. Centuries later, Satoshi, Hikari, and Takeshi visit the riverside town of Michina, known for its natural beauty. They travel to the ruins atop a large rock near a scenic lake. As they explore, a waterspout forms, prompting a girl named Sheena, a descendant of Damos, to summon Dialga to stop the storm. After the danger passes, Sheena and another character, Kevin, recount the legend of Michina. Soon after, a battle between Dialga, Palkia, and Giratina erupts, destroying the ruins and awakening Arceus.