On a night when the full moon burned brightly over Seoul, Kang Taejun....the undefeated racing champion and heir to Kang Motors...lost control of his car after a sudden brake failure at the Yongin circuit. At that very same moment, in a small apartment in Mapo, twenty-year-old sculpture student Han Seoah was holding her dying black cat, Bam, in her trembling arms. The instant Taejun’s heart stopped, his wandering soul was drawn into the lifeless body of Bam. The black cat opened its eyes again....no longer with the innocence of an animal, but with the sharp, awakened gaze of a man who once stood at the peak of fame. Taejun soon realizes his human body remains in a coma, and that the crash may have been no accident, but a calculated move in a ruthless family power struggle. Han Seoah begins to notice that Bam has changed. He refuses cat food, watches racing broadcasts with intense focus, and even scratches the name “Kang Taejun” into the clay in her studio. As Han Seoah searches for answers, she is drawn into the dark secrets of the Kang family, while unseen enemies work to erase the truth. Trapped inside a fragile feline body, Taejun experiences a world far removed from roaring engines and flashing cameras, a quiet life filled with the scent of clay, plaster-stained hands, and the warmth of a small, imperfect home. Under the moonlight spilling into her studio, Han Seoah whispers that if Bam were human, she would have fallen in love with him already, words that stir something unfamiliar in Taejun’s guarded heart. As the truth edges closer to exposure, Taejun feels his soul being pulled back toward his comatose body. He must choose: awaken to reclaim his name, power, and vengeance, or abandon it all to remain by Han Seoah ’s side as a black cat beneath the same moon that bound their fates together. For on that night when the moon shone too brightly, the champion fell… and a love beyond status and flesh quietly began.

A thousand years ago, the Divine Bone Scripture could bring the dying back to life, at the cost of its own soul. After the war between gods and demons, it vanished… and became a legend no one could prove. No one knew it had been reborn in human form. Su Ninghua enters White Cloud Sect with a single purpose: to find the forbidden scripture and save the master who once rescued her from death. The three-petaled flower mark over her heart burns whenever she draws near Yan Yun, the cold, untouchable guardian of the sect’s forbidden spring. Feared as a demon. Whispered about as a curse. Untouchable by all. Except her. What Ninghua does not know is that Yan Yun is the Divine Bone Scripture itself, given flesh, emotion, and a fragile human heart. And she is the Key destined to “open” him. If she completes the ritual, her master will live. If she does… Yan Yun will cease to exist. As forbidden attraction deepens into something neither of them can deny, a devastating truth emerges: the master she trusts has been manipulating her from the very beginning, seeking not salvation, but immortality. Now Ninghua must choose between gratitude and love. Between duty and desire. Between saving the man who raised her… and destroying the man who finally made her heart awaken. Because sometimes, the greatest forbidden power under heaven, is not immortality. It is the right to love… and be loved in return...