The Hooples' next-door neighbors traditionally sponsor a day-after-Halloween ""haunted house"" in their garage as a hospital fundraiser. But when their cauldron-in-the-making blows up the garage, Alvin Hoople persuades his parents to let him and his friends do a haunted house in the Hoople garage. The rest is a scramble of garage-cleaning and spooky-trick-fixing--with all the corny old props such as peeled grapes, cold spaghetti, and fake blood. Alvin fears disaster and crabby old Mr. Goralski is on to all the tricks--but Alvin's friends and even his small-time enemy come through with their acts; the old man is scared by a real cat (little Annie Hoople's) that wasn't part of the program; and enough kid visitors are spooked to declare the haunted house a success. With a lot of fooling around, but none of it very funny, it's easy to breeze through and as easy to forget.