Maya discovers a mysterious diary that can predict the future whenever she writes the words "Dear Diary.” At first, the diary seems like a gift. It helps her avoid mistakes, make better choices, and prepare for the good things that will happen the next day. But soon, the predictions become darker. Maya begins seeing accidents, arguments, secrets, and painful events involving people she cares about. She tries to change every bad prediction, but each attempt creates unexpected consequences. The more she changes, the more frightening the future becomes.