On the night she was five, her father died beneath moonlight like shattered porcelain. Those eyes that would never close took root in Yu Runi's soul. At twenty-five, among broken pigments and medicine bottles, she meets Wen Zhaofu, another person who learned in the dark room of childhood that "love is a weakness." They are mirrors and prisoners to each other. Amid the ruins of an office romance, ambiguous betrayal, and pathological dependence, they try to confirm each other's existence by hurting one another. When the moon in her hallucinations begins to grow teeth, and love becomes a slow sacrifice, Yu Runian finally understands: some souls are born as porcelain destined to fall toward the moon. And falling is the only way home that leaves her whole.