Josie, Charlie, Lily, and Amy are knee deep exploring an old, supposedly haunted stone mansion – one recently inherited by Amy’s family who plan to remodel it into a bed and breakfast. The DIGGER’S CLUB stumbles onto a clue, which leads to another, and another, and their first adventure begins! Given one last day to explore the stone mansion before the remodeling begins, the girls are on edge when Charlie doesn’t arrive on time. Waiting for him to show up, they discover the “ghost” of the mansion, who is intent on uncovering the hidden treasure first. The girls are shocked to find out the “ghost’s” real identity when he corners them in the mansion study. Can he be stopped before the girls get hurt and something bad happens to the still missing Charlie? Is there really a hidden treasure or is it just a long forgotten game of scavenger hunt?