Summer has just begun, and Hazel "Hazy" Bloom is not a happy camper. In fact, she's not even an unhappy camper, because she's stuck at home while all of her friends spend their summers camping (okay, Elizabeth's is only day camp, but still). But then her tomorrow power—her ability to see a visual cue about something that will happen the next day—leads her to the empty house next door, where strange things keep happening. Empty house. Flickering lights. Sudden gust of wind. Could there be a ghost there? Hazy realizes it's once again up to her to solve the mystery and prevent doom!