This is how Yen Sid talks to Ash and Serena about the Legendary Heart Jewel goes in Ash and Serena's Great Adventure.
(Later Ash, Serena and the other heroes are now at Yen Sid's tower)
Ash Ketchum: Yen Sid. We're here.
Yen Sid: Ash, Serena, Tino and company come in, come in.
(They walk in Yen Sid's Study)
Serena: You want to see us, for what?
Yen Sid: There's something you must know that there is the legendary jewel that has incredible powers, it is called the "Heart Jewel."
Ash and Serena: Heart Jewel?
Lor McQuarrie: What's the heart jewel?
Tino Tonitini: Never heard of it, before.
Clemont: Me, too.
Carver Descartes: Never heard of it either.
Tish Katsufrakis: Tell us about it, please.
Yen Sid: Sure thing. (He brings out a tablet) This is the tablet of the Legendary Heart Jewel.
Ash Ketchum: Whoa. Amazing.
Yen Sid: In ancient times long ago, the heart jewel was created by lovers in order to make people have a strong bond between each other. However, there were evil people who wants to steal it so they can use it for evil. But they were stopped by brave warriors.
Twilight Sparkle: That's pretty interesting.
Sci-Twi: It's really incredible how the heart jewel is created.
Yen Sid: There are four pieces of the heart jewel. The Red symbol stands for "Love." The Blue symbol stands for "Friendship." The Yellow symbol stands for "Happiness." And the Green symbol stands for "Wishes." When four pieces combined to each other, two people holds the complete heart jewel and they're powers will become unstoppable.
Tino Tontini: Amazing, where can Ash and Serena find it?
Yen Sid: They're scattered into four places. Some of you knew, and some that you don't know.
Serena: Where can we find them, Yen Sid?
Yen Sid: The first piece you have to get is the love symbol is in Isla Sorna where the dinosaurs live in the island. The second piece is the friendship symbol is in the Haunted Train Station. The third piece is the happiness symbol is in Las Vegas. And the last piece is the wishes symbol is in deep in the jungle of Africa.
Ash Ketchum: Then we have to go search for four pieces of the heart jewel!
Yen Sid: Now, now. Just a moment.
Sunset Shimmer: What is it?
Yen Sid: Xehanort and his minions are planning to steal four pieces of the heart jewel and use it for evil to turn our world into eternal darkness forever.
Ash Ketchum: We will leave tomorrow morning.