I.B. Grumply, a children’s book author, moves into a Victorian mansion in Ghastly, IL to write a new book and meets with some unusual obstacles. He finds an 11-year-old boy and a ghost already there. Of course Grumply doesn’t believe in real ghosts, so he blames the boy and his cat for all the ghostly deeds. Will Grumply become a believer, or will the ghost have the last laugh?