The Fairies stole Blue, and now they've got Great-grandpa. Tam discovers his Great-grandpa Toby has been captured by the beautiful Damson Hag, and turned into a nine-year-old boy! Bewitched and mournfully playing the humming machine to himself, Great-grandpa is tempted to stay in Faery Land and be young forever . . . Unless Tam has anything to do with it.