Cassie Larchmont’s summer is just beginning, and when her friends finally arrive at Lake Solaria to begin their vacation, everything seems perfect. They’ve even made a new friend: Nicole Morgan, a girl that’s eager to share a secret. There’s a hidden toy-room in an old house, one that has dolls, paints and puzzles; everything to keep little girls busy. But it’s not what it seems, and Nicole isn’t too happy about sharing Cassie’s friendship with Diane and Lisa.