Jiang Zhaoyue, a female disciple of the Taixu Sword Sect, is branded a successor of the evil path by her sect because of an ancient lamp. Three old acquaintances who have returned with memories of their past lives urge her to stay, claiming they only want to protect her. But Jiang Zhaoyue would rather shatter her own sword seal and leave the sect than surrender her right to choose her own life. She reopens the Heart-Illuminating Tower, using the lamp to illuminate people's hearts and reveal the boundary between genuine feelings and obsession. When the three old acquaintances finally learn to respect her choices and let go of their need to control her, they understand that true companionship is not possession, but walking alongside her and supporting the path she chooses.