Thistle Greenbud thought the nickname Bad Fairy was behind her, but she can't escape it. Someone is spreading a rumor about her that just isn't true and can ruin all of her hard work in getting into Advanced School. What fairy would do such a thing? As if that's not bad enough, Thistle's dad goes missing. Not a single fairy in Tinselville has seen him. He's vanished like pixie dust. Her mom is distraught, and Thistle is worried. Where could he be? Thistle and the Flutters, along with Dusty and Moss, are on both cases. Can they find out what happened to her dad and solve the Bad Fairy rumor? Thistle hopes so!