Chas, Zoe, Xander, Nickie and Patricia and Sally make up the Sherlock Jr. Detective Agency. Even though they are only 12 years old, each one of them possess their own unique specialty. Patricia is a computer whiz, Zoe and Xander, the twins, are inventors, Nickie is a mathematician, Sally is their administrator and Chas is the leader. In this adventure, they are hired by Skids, the local skate boarding champ, to find his missing dog Casper which was stolen out right of his back yard in broad daylight. Suspecting foul play their detective skills and the Sherlock Jr. Network in the neighborhood. They must put their best foot forward to solve the crime before time runs out and the kidnapped Casper is sold on an auction web site to the highest bidder.