Natalie loved to make to-do lists and felt a real satisfaction when everything on her list was checked off. This made her the perfect wedding coordinator, but didn't always go over so well with other areas of her life. When Great-Aunt Wanda was alive she'd been almost like a mother to Natalie, whose mother dropped out of Natalie's life when she was fifteen. The first Mother's Day after Wanda's death, Natalie receives an eerie letter from her precious great-aunt with four challenges. Will the always-in-control Natalie be able to fulfill Wanda's challenges, and experience the true love and friendships that are awaiting her, or will she retreat to the security of her perfectly plotted to-do list life and ignore her aunt's challenges from the grave?