“Don’t speak of what you hear, and don’t remember what you see.”

Ok-boon is brought into a great mansion, where mysterious deaths have occurred, and meets
Madam Shin, the lady of the house with a great secret.
Madam Shin tells Ok-boon the rules she must obey by while in the house.
Later, Ok-boon must face the terrifying truths beyond imagination.

The dead begins to cry out loud!
If you want to live, cover your ears!