Hector and Hannah Crowe are no strangers to the bizarre and supernatural. Ghosts, ghouls, mad scientists and revenants come with the territory when you are the children of the world's foremost paranormal investigators. The Crowes live in Strange Manor, the most haunted house in the most haunted little town in America, in the middle of a deep dark wood filled with mysterious beasts. This lifestyle is anything but strange for the Crowe children. But on this night – the first night of summer vacation – the Crowes face the most dangerous and terrifying night of their young lives. An ancient evil has been unleashed in the bowels of Strange Manor, something that is dark and powerful ... and knows who they are.