With her time running out, cellist Summer Wilson wants only to secure her son’s future and fulfill her musical dreams—until she discovers that her “bodyguard” husband, Nathan Hawthorne, is secretly a billionaire. As a jealous rival, family schemes, and her worsening illness threaten their reunion, Summer tries to push him away. But a treasured diary reveals fifteen years of unwavering love. As the truth about his identity, their child, and her illness comes to light, they choose to face an uncertain future together—in a love story racing against time.