When Harold the fox is invited to a costume birthday party, he and his friends come up with fantastic outfits. The party starts off really well but when the birthday boy’s cake is stolen during a game played in the dark, everyone is a prime suspect in the mystery of the missing cake. Can Harold piece together the clues to solve the mystery and save the party? A funny story that encourages honesty and sharing, this is set to become a family - and birthday - favorite.