When Percy the Pelican hears rumors of pirates plotting to recover sunken treasure that rightfully belongs to citizens of Adventure Town, the S.A.R.T., led by Adventure Koala, springs into action. As they use their special abilities to solve clues and uncover the mystery of stolen artifacts, Adventure Koala and his team encounter more than they bargained for. Will they recover the invaluable part of Adventure Town's history in time for the town's founding celebration? Or will a mysterious enemy get in their way and foil their plans?