This illustrated children's book celebrates the extraordinary potential of ordinary deeds—showing how one child's act of kindness can change the world One ordinary day, Ordinary Mary stumbles upon some ordinary blueberries. When she decides to pick them for her neighbor, Mrs. Bishop, her thoughtful act starts a chain reaction that multiplies around the world. Mrs. Bishop makes blueberry muffins and gives them to her paperboy and four others—one of whom is Mr. Stevens, who then helps five different people with their luggage—one of whom is Maria, who then helps five other people—and so on, until the deed comes back to Mary.