We see Ash, Misty, and Brock (in their classic Kanto clothes), asleep in a black void, presumably a dark living room.)
Male announcer: As night falls, three heroes sleep...but little do they know...
(Ash stirs a bit as a dream balloon forms, depicting him in yellow martial artist's garb, purple and gold knuckles on his hands, and a sword at his side, delivering a lightning tinged punch to some black clad ninjas.)
Male announcer: They are about to embark on their greatest adventure yet...
(Another dream balloon forms as Misty changes position. The dream depicts her in a long blue robe that looks similar to a ninja's garb and a hood with a veil that covers most of her face, slashing down a mob of bandits as residents of a Chinese-esque city look on in awe)
Male announcer: In their dreams.
(As Brock's dream balloon forms, Ash's and Misty's dreamsonas meet his dreamsona--who wears a red tunic with black trim with a cape to match, black leggings, and shoes--in a forest somewhere in the dream world)
Male announcer: Together, the three of them will race to save an exotic land known only in their dreams...
(We see scenes of the Trio's dreamsonas fighting shadowed ninja-like beings using swords, bows, fists, and even instruments!)
Male announcer: Evil will come to learn not to disturb the harmony of fire, ice and lightning...
(The Trio's dreamsonas begin charging a massive ball of red, blue, and yellow energy...)
Male announcer: Lest these titans wreak destruction upon the world in which they clash.
(...which destroys a black castle in the distance. The scene of the Trio sleeping fades out, but on the black screen, a lightning spark spells the words "COMING SOON")