Dora, the brave explorer girl with her signature pink shirt and backpack, walked hand-in-hand with Boots, her monkey best friend in red boots, as they explored the spooky woods on a Halloween adventure. Suddenly, a rustle in the bushes made them freeze. Out popped Swiper, the sly fox with his mask and striped tail, flanked by Maximo, the mischievous elf with pointy hat, the Shape Bandit clutching geometric shapes, Zeta the wicked sorceress in dark robes, Angelica Pickles[/@@ch_7] the bossy toddler with Cynthia doll, [@ch_8]Vicky the mean babysitter with wild hair, Candace the frantic teen in orange dress, Rintoo the tiger with stripes and grin, Minnie Mouse in polka-dot bow, the Pirate Piggies three chubby pigs with eyepatches and swords, Plankton the tiny alien genius with one eye, Olivia the pig girl in tutu, Kiki the Fresh Beat Band girl with guitar, Deema the Bubble Guppy with bubbly tail, Orange Blossom the sweet flower fairy, Fancy Nancy in frilly dress and boa, Vampirina the vampire girl with fangs, and Maggie and Miss Puff, the cloud fairy duo floating nearby. "Heh heh, we're here to swipe your Halloween treats, Dora! No swiping back!" Swiper snarled, while the gang cackled menacingly, their eyes gleaming in the dim light. "Oh no, Boots! They're all together trying to scare us and take our candy! We have to run!"

Dora and Boots bolted down the path, hearts pounding, leaves flying in their wake. Maximo hurled shapes like frisbees, and Angelica shouted taunts, but the friends dodged nimbly. Spotting a glowing Umi-phone, they dialed frantically. "Geo from Team Umizoomi! Help! Swiper, Maximo, the Shape Bandit, Zeta, Angelica, Vicky, Candace, Rintoo, Minnie, the Pirate Piggies, Plankton, Olivia, Kiki, Deema, Orange Blossom, Fancy Nancy, Vampirina, Maggie, and Miss Puff are chasing us to steal our Halloween fun! They're super scary!" Geo, the math whiz boy with shape-patterned shirt, appeared via hologram with his team, tools sparkling. Milli and Bot nodded determinedly. "Don't worry, Dora and Boots! We'll use Umi-power to help you turn the tables, just like Bubble Puppy and Mr. Owl did on Halloween when they scared the Bubble Guppies and Franklin the Turtle and his friends!"

Dora, Boots, and Geo's team huddled, quickly donning ghost costumes—flowing white sheets with eye holes, just like Bubble Puppy the dog and Mr. Owl wore to spook their friends. Dora remembered those nights vividly, giggling at the memory of Bubble Guppies shrieking and Franklin's shell quivering. The group practiced boo-sounds, fabrics swirling ethereally. "I remember Halloween nights when Bubble Puppy and Mr. Owl scared everyone so good! Now it's our turn to be brave ghosts and send these baddies running!" "Pattern power! Let's use math to position ourselves perfectly for the biggest scare. One ghost here, two there—Umi-zoom to victory!" Geo directed, his tools measuring spooky spots.

The gang of villains burst into the clearing, panting and laughing evilly, unaware of the trap. Swiper swished his tail triumphantly, Zeta cackled spells, and Vampirina flashed fangs. Suddenly, the ghosts rose with wails! "Boo! We're Halloween ghosts! Go away, swipers and scarers!" Dora's voice echoed spookily from under her sheet. "Ooooh! Math ghosts are here to haunt you! Run if you dare not solve our pattern puzzle— but you can't!" Geo added, patterns of light flashing.

Swiper, Maximo, Shape Bandit, Zeta, Angelica, Vicky, Candace, Rintoo, Minnie, Pirate Piggies, Plankton, Olivia, Kiki, Deema, Orange Blossom, Fancy Nancy, Vampirina, and Maggie and Miss Puff screamed in terror, eyes wide like saucers. They ran wildly, tripping and yelling just like the Bubble Guppies splashing in fright and Franklin hiding in his shell with Bear and Snail. "Ghosts! Real Halloween ghosts! Help!" they wailed, vanishing into the woods. "Yay! It worked, Dora! They're gone for good this Halloween!" Boots cheered, peeking from his sheet. "Yay! Teamwork makes the dream work. Those ghosts were perfect!"

Dora and Boots, still in ghost sheets, skipped home triumphantly with Geo's team waving goodbye via Umi-vision. Dora's Mom, kind with apron and smile, opened the door warmly. Dora hugged her tight, recounting the wild chase. "Mom, you won't believe it! Swiper and all those silly scarers chased us, but we called Geo, dressed as ghosts like Bubble Puppy and Mr. Owl, and scared them away screaming just like on those fun Halloween nights! We saved our candy!" "What brave adventurers you are, Dora and Boots! Halloween heroes—now let's celebrate with treats!"