Little Bill clutches his backpack tightly, eyes wide with fear as he stands frozen. His friends, Andrew, Fuchsia, and Kiku, huddle close together, their faces pale. The ghost waves its wispy arms, making a spooky sound that sends shivers down their spines. "Did you see that? There's a ghost by the tree!" "Let's get out of here!"

Fuchsia grabs Little Bill's hand, pulling him along as they run. Kiku keeps glancing over her shoulder, making sure the ghost doesn't follow too closely. The group bursts through the gate, not stopping until they reach the safety of the park's edge. "What if it chases us all the way home?" "We need help! Let's find someone who can figure this out."

Team Umizoomi[/@ch_5]—Milli, Geo, and Bot—are playing hopscotch. The sun shines again as the children approach, still shaken but hopeful.] Little Bill and his friends rush up to Geo, breathless and anxious. Geo tilts his head, listening carefully as they recount the ghostly encounter. Milli and Bot exchange concerned glances. "Geo, there was a ghost! It scared us so much we ran all the way here!" "Don't worry, Team Umizoomi is on the case! We'll solve this mystery together."

Geo[/@ch_7] pulls out his magnifying glass, and Milli begins examining the ground for clues.] Bot scans the area with his robotic sensors, detecting something unusual. Milli spots a length of fishing line stretching from the tree branch to a nearby bush. Geo follows the string and finds a flashlight and a bedsheet tangled together. "Look! Someone set this up to look like a ghost." "It's just a trick! There's no real ghost here."

Bobby[/@ch_9], Little Bill's older brother, steps out, sheepish but grinning. The playground feels warm and familiar once more, the tension replaced by laughter and relief.] Bobby admits he wanted to play a prank, not realizing how scared everyone would get. Little Bill and his friends sigh in relief, grateful that the ghost was just a trick. Team Umizoomi reassures everyone that it's okay to be scared, but it's always best to find the truth. "Sorry, everyone. I didn't mean to make you so scared!" "Next time, maybe just play tag with us instead!"

Team Umizoomi[/@ch_5] sit in a circle, sharing stories and snacks. The ghostly prank is now just another funny memory, and the friends feel closer than ever.] Little Bill looks around at his friends, a smile on his face as he realizes how lucky he is to have them. Geo gives him a thumbs-up, and the group bursts into laughter, comforted by the warmth of friendship and the solved mystery. "Thanks, Team Umizoomi. You helped us be brave and solve the ghost mystery!" "Anytime, Little Bill! That's what friends are for."