Someone has taken Huckle's car by mistake and left their own car in its place. Although both vehicle look the same, our heroes find books in the trunk. After tracking down the books, they determine that Huckle's car was mistakenly taken by the local bookshop owner. Huckle, Lowly and Sally set out to prove to Pig Will and Pig Won't that the figure they saw wearing a strange yellow suit and helmet is not a spaceman from another planet. The clues finally lead them to the realization that it was really Granny Goodpig wearing her yellow suit to protect her while she collected honey from her beehives.