When Hope Wilson and Carter Tucker go to their graduation party, they think everything will be amazingly perfect. However, somethings can change in just a beat of a heart. And once they do change, it can be changed back. When someone gets murdered at this party, Carter can't help but feel completely depressed at the loss. She now has to find out how her friend died, who did it, and how to fix it. Will she ever be able to survive the heart-wrecking loss of her best friend?