Holy Night is a team dedicated to combating groups that worship demons. The members include Bau, Sharon, and Kim-kun. Bau possesses immense physical strength, while Sharon has the unique ability to identify demons and perform exorcisms. Kim-kun provides support to both Bau and Sharon in their missions. Meanwhile, Psychiatrist Jung-won seeks the help of the Holy Night team to save her younger sister, Eun-seo, who is possessed by a demon.