Chloe, the cheerful leader with bouncy pigtails and a bright pink dress, organized a game with her friends.
Polka Dot Pixie, a tiny fairy with shimmering wings and a polka-dot outfit, fluttered nearby sprinkling magic dust.
Toc Toc Clock, the friendly clock with big round eyes and ticking hands, kept time for their fun activities.
"Okay everyone, let's play hide-and-seek in the treehouse! This is going to be the best night ever with all our Treehouse TV friends together!"
"Yay! I'll hide first with my sparkly magic to make it extra tricky for you all!"
Chloe froze mid-laugh, her eyes widening in terror at the ghostly shape emerging from the shadows.
Toc Toc Clock's hands spun wildly as he backed away, his face paling.
The ghost let out a spine-chilling wail that echoed through the trees, making toys rattle and lights flicker ominously.
"Aaaah! It's a ghost! Run for your lives, everyone! This treehouse is haunted!"
"Eeeeek! My magic dust can't stop this scary thing! Let's get out of here before it catches us!"
"Tick-tock, time to flee! I can hear my gears shaking in fear!"
Chloe led the frantic dash, glancing back with wide eyes at the pursuing mist.
Polka Dot Pixie flew erratically, her wings buzzing in panic.
Toc Toc Clock stumbled on roots but kept ticking forward desperately.
"Keep running! That ghost is right behind us! We need help before it traps us forever in the woods!"
"My tiny legs can't go much faster! What if it possesses the whole forest and we never see our treehouse again?"
Chloe spotted the tiny superheroes and waved frantically.
Geo, the math whiz with a shiny blue visor and tool belt, was building a shape tower nearby.
Milli, his sister with a pink bow headband and stretchy arms, measured patterns.
Bot, the robot with screen face and wheels, rolled up curiously.
"Geo from Umizoomi! Help us please! A terrifying ghost chased us from our treehouse—we ran all the way here telling everyone, but it's real and scary!"
"Yes, it had glowing eyes and wailed like the end of time! Our hearts are still racing!"
"Don't worry, Treehouse TV friends! UmiZoomi is on the case. Tell us every detail so we can use our mighty math powers to solve this spooky mystery."
Geo examined footprints with his shape detector, visor beeping.
Milli stretched to check high shelves.
Bot's screen displayed pattern analyses.
"Look here— these footprints are just kid-sized shoes with glow paint, not ghost trails. And the mist? It's from a fog machine hidden behind the curtain!"
"By counting the buttons on this costume, it's clear someone dressed up to scare you for a prank. The pattern matches perfectly—no real ghost!"
"Affirmative! Probability of hoax: 100%. Time to reveal the culprit!"
Pranky Pete, a mischievous boy with messy hair and a sheet costume, grinned awkwardly.
Chloe gasped then smiled in relief.
Geo high-fived his team.
"Okay, okay, it was me all along! I just wanted to surprise you for Halloween fun, but I got carried away with the fog and sounds. Sorry for scaring you so much!"
"Phew, no ghost after all! Thanks to Geo and Umizoomi, we're safe. Let's turn this into the best prank party ever!"
"Great job, team! Math always reveals the truth. Now, who's ready for shape games and no more scares?"
