Dora, the brave young explorer with her signature pink shirt and orange shorts, skips along the shoreline, her backpack bouncing lightly. Boots, the cheerful monkey in red boots, swings from a low branch nearby, his fur fluffy and eyes sparkling with excitement. "¡Hola, Boots! Look at all these pretty shells! Today is going to be the best beach day ever. We can build sandcastles and splash in the waves all afternoon!" "¡Sí, Dora! I love the beach! The water is so sparkly, and the sand feels so soft under my paws. Let's find the biggest shell to keep as a treasure!"

Dora and Boots explore near the rocks, picking up shells and giggling. Suddenly, a dark, shadowy figure emerges from behind the largest boulder, tall and cloaked in mist from the sea spray, with glowing eyes that pierce the dimming light. "Boots! What is that? It looks like a huge monster with sharp claws and a scary growl coming from the rocks! We have to run, it's coming right for us!" "¡Ay, Dora! I'm so scared! It's huge and spooky, with big teeth and steam coming from its mouth! Run, run for our lives! Don't look back!"

Dora grabs Boots' hand, both sprinting across the cooling sand, their faces pale with fear, backpacks swinging wildly. Sand kicks up behind them, and the shadowy figure seems to pursue, its silhouette growing larger against the fading sun. "Faster, Boots! That scary thing is still chasing us! We need help right now before it catches us on this big, empty beach!" "I'm running as fast as my boots can go, Dora! My heart is beating so loud, and I can hear its footsteps thumping closer. Where can we hide?"

Panting heavily, Dora pulls out her trusty backpack and activates the magical communication device, a glowing screen shimmering to life. Geo, the tiny math wizard from UmiZoomi with his orange helmet and slide tool, appears on the screen, along with his team. "¡Ayuda, Geo! Boots and I were at the beach collecting shells when a huge, scary shadow monster jumped out from the rocks! It had glowing eyes, claws, and it chased us all the way here—we ran for our lives!" "Yes, Geo! It was so frightening, like something from a nightmare, roaring and stomping after us. Please come help us figure out what it is before it finds us again!"

Geo, Milli the pattern-loving girl with pink hair bows, and Bot the robot with extendable arms, scan the area with glowing gadgets. "Don't worry, Dora and Boots! We're the UmiZoomi team, and we'll use our mighty math powers to solve this beach mystery. Tell us more about the scary shadow—how tall was it, and what shape were its eyes?" "Yes, let's measure the footprints it left in the sand. If we count the steps and patterns, we can figure out exactly what chased you. It might not be as scary as it seemed!" "Pattern power activated! Scanning the rocks now—beep boop, I see something hiding there. Hold on, friends, UmiZoomi is on the case!"

Geo uses his slide tool to project measurements, while Milli and Bot unravel a tangled net. It turns out the "monster" was just a friendly fisherman in a bulky raincoat, tangled in his own net, who had tripped and scared them with his startled yell. "¡Gracias, UmiZoomi! You turned our scary beach adventure into a fun mystery. It wasn't a monster at all, just someone who got stuck!" "Yeah! Now we can all play on the beach together without being scared. That was the best help ever!" "Great job, team! Math and teamwork solve everything—even spooky beach shadows. Adventure over!"