By accident, she was reincarnated more than ten years late. By accident, she met her old friends one after another. She was poisoned inexplicably, controlled by others inexplicably, and lost her memory inexplicably. She could no longer tell the difference between dreams and reality. Who was she, and who did she know? He is her bond, her senior brother, his past life, her lover, and her resentment. He controls her destiny, exchanging half his life's foolishness for half his life's wisdom. He protects him. He tortured her and used her in exchange for her lifelong hatred for him. She couldn't tell whether they were her lovers or enemies. Who would tell her where to go? Will the sealed memories finally awaken? And who is that mysterious dreamer? Betrayal, doubt, loyalty, protection, let's see how these people interpret a vigorous love story between sons and daughters!