The mystery of Minerva's parents is pushed aside once again when the ghost of old Black Bart, a cruel pirate, wreaks havoc in the village of Pembrose. Legend has it that the old pirate was so mean during his life that his spirit cannot find peace until he performs a good deed. Minerva is certain that she can convince Bart to do just that, but first she and her friends have to find him. Will the search for Black Bart's spirit lead Minerva and her friends into danger?