A traffic accident made Ji-hyun (Ryu Sun) mute, but she did not lose her confidence in life because of her cheerful personality. Her sister Soo-hyun (Chae Min-seo) was the opposite. She lost her hair due to cancer chemotherapy and was very depressed. One day, Ji-hyun bought a beautiful wig for Soo-hyun, thinking that Soo-hyun would regain the courage to live. Soo-hyun was indeed a completely different person after putting it on, but before she could become cheerful, her behavior was very different from before. Then, a series of creepy horror events happened. It turned out that the ghost of a woman who died unjustly was hidden in the wig.