Nancy, Bess, and George want tickets to see pop singer Katy Sloan play at the River Heights Amusement Park--but their parents say they've already filled their summer theme-park quota. So the girls decide to turn lemons into lemonade by earning their own tickets--with a lemonade stand

Unfortunately Lily Ramos, a new girl in River Heights, has the same idea. She's the niece of the owner of the town's newest and hottest caf , and her stand is equipped with caf tables, gourmet treats, and a rolling library cart Good thing Nancy has a secret weapon: Hannah's family lemonade recipe

The girls are all set to whip up the lemonade--until the recipe is replaced by a blank sheet of paper Nancy, Bess, and George set out to find the thief Could it be Lily, whose stand may be fancy but whose lemonade is totally yucky? Or a sneaky contestant on Ready, Set, Cook , the hot new kids' cooking contest show? It's up to the Clue Crew--and you--to find out