A traffic accident turned Ji Hyun (Liu Shan) into a mute, but her bright personality did not rob her of her confidence in life. In contrast, her sister Soo Hyun (Cai Min Rui) became very gloomy and depressed after losing all her hair due to cancer treatment. One day, Ji Hyun bought a beautiful wig for Soo Hyun, thinking it would help her regain the courage to live. After wearing it, Soo Hyun indeed looked like a different person, but she still couldn't cheer up. Her behavior had changed drastically, and soon after, a series of horrifying events unfolded. It turned out that the wig contained the ghost of a wronged woman who had died.
Horror