It may not be clear whether it is reality or a dream. Love and no love, hate and no hate are just a mirror. If I could do it again, I would choose to love you, even if it means that I will be shattered to pieces. Yue'er has been having such a dream recently. In the dream, she stabbed a hairpin into her body, and a man opposite shouted: "No..." She couldn't see the man's face clearly, but her heart ached with heartbreaking pain. Yue'er woke up from the pain again, with tears streaming down her face, and murmured: "Mumu..." This sound frightened Yue'er herself. Who was Mumu? Why did she call his name? Why did she feel heartache...