Dr. Cheon and Lost Talisman

Dr. Cheon (Gang Dong Won), is a shaman known for conducting exorcisms alongside his versatile assistant, In Bae (Lee Dong Hwi). Despite his role, Dr. Cheon does not believe in supernatural phenomena like ghosts or possessions. He views his battles as against the unstable mental states of humans rather than spirits or mystical forces. As part of his routine, he feigns exorcisms during his work.

Each exorcism performed by Dr. Cheon and In Bae is recorded and uploaded to their YouTube channel. This strategy brings them fame and a clientele willing to pay high fees. Things take a turn when a client, Oh Yu Kyung (Esom), who can see ghosts, approaches Dr. Cheon for help.

Oh Yu Kyung seeks Dr. Cheon's help to cure her sister, who she believes is possessed. Offering a fee too substantial for Dr. Cheon to decline, she presents him with his first encounter with a genuinely dangerous possession. The story unfolds, exploring the journey of this skeptical shaman as he faces a reality he never believed in.