One sunny afternoon, Lana Loud and Shiloh Loud decided to dress up as their favorite cartoon dogs for the annual Halloween Block Party in Royal Woods. Lana transformed into Blue from "Blue's Clues," wearing a blue dress with polka dots and floppy ears, while Shiloh donned a classic Scooby-Doo costume, complete with a brown fur suit and a floppy collar. As they set off to join their friends, Lana bounced excitedly, pointing out clues hidden all over the neighborhood. "Look, Shiloh! There's a paw print! I wonder what it leads to!" she chirped, wagging her imaginary tail.

Shiloh chuckled, trying to embody his role as the lovable Great Dane. "Ruh-roh! I hope it's not another ghost or monster! Let’s solve this mystery!" he replied, giving his best Scooby voice.

The two began their adventure by pretending to investigate the park, solving various puzzles and riddles along the way.