It's summertime in Mahone Bay, and Angela and Emmie are looking forward to a vacation before starting Grade Seven. But everywhere they turn, they find another mystery. From strange sounds in the attic to ghostly figures on the shore, things just keep getting weirder. Is there a kind spirit watching over them, like Anglea suspects? Or is Angela just too superstitious, like Emmie always says? Either way, these friends definitely have their share of adventure solving the mystery of the Ghost of at Mahone Bay.