Pocket Monsters Diamond & Pearl: Dialga VS Palkia VS Darkrai

While touring Alamos Town-home of the Space-Time Tower- with the beautiful Alice, Ash and his friends discover that the town's special garden has been decimated! Baron Alberto, a dashing but arrogant fellow, immediately blames the destruction on Darkrai.
As if it just overheard the accusation, Darkrai appears and confronts our heroes!
Who is Darkrai? Is is a fiend... or a friend in disguise? And as a battle between Legendary Pokemon Dialga and Palkia rages directly abouve Alamos Town-and threatens to tear a hole in the space-time continuum- will Ash and his friends survive this showdown and learn Darkrai's true nature?
(Source: DVD Cover [English Version])