[2][3] It follows a father's search for his missing daughter after she vanishes in their new home, and a mysterious man who claims to know the secret behind her disappearance.

Sang-won loses his wife in a sudden accident, leaving him alone with his daughter, Yi-na.

Strange noises begin emanating from the closet in Yi-na's room, and she starts exhibiting unusual symptoms.

As Sang-won desperately searches for his daughter, a mysterious man named Kyung-hoon approaches him, claiming to know her whereabouts.

Kyung-hoon, who has been investigating the disappearance of missing children for the past ten years, reveals an unbelievable story.