A mystery thriller about a real estate agent who secretly enters clients' homes and becomes obsessed with a deceptive social media influencer. The film explores themes of obsession, identity and the dark side of social media.

그녀가 죽었다

Kaname Azuma is sick of her marriage life with her husband and she decides to divorce him. She leaves Japan and travels to South Korea. There, she visits her brother Teruo's villa. Teruo is surprised by Kaname's sudden visit, but after he hears of her marriage life, he lets her to stay with him. Somehow, Teruo and Kaname happen to enter The Cursed Sanctuary X.