Ho-Oh: Legend of Fire

Lugia: Legend of Wind is the first upcoming special in Brian and the Eeveelution Family's Adventures Chronicles. And takes place during season 2.

Summery
When Plankton, teams up with Karen, Juniper Montage, and Dennis, he plans to capture the beast of the sea: Lugia! And plans to use his powers to take over the world! And so now, Terence, Spongebob, Patrick, Squidward, Sandy, Mr. Krabs, the Human Mane 5, Sunset Shimmer, Sci-Twi, Spike the dog, and Peter must stop them before it's too late.

Trivia

 * This special is based off of the Pokémon tv special: "The Legend of Thunder!".
 * It's revealed that Dennis and Juniper have Pokémon of their own. A Nidoking and Gardevoir.