What happens when two best friends take on the world's worst summer? On the first day of vacation, ten-year-old Ivy Crowden falls down the stairs and breaks her leg. Stuck in a plaster cast, she's certain her summer is doomed. Not even Teddy, her neighbor and best friend, can cheer her up because he's dealing with his own pain: the loss of a beloved dog.But when Ivy witnesses a possible burglary from her living room window, her summer takes a sudden turn from meh to mysterious. Who are the criminals? Might a classmate be involved? And . . . uh-oh. A second mystery is nipping at Ivy's heels. Cue the best friends, the best dog, and the best chance that summer can be saved!