When the app is launched, a ghost appears. Developed by four young adults, the app becomes the centerpiece of a livestream where they venture into a supposedly haunted mountain to prove its authenticity—only to meet a grim fate.

Cast:Kim Young-jae, Kim Ju-a, Yang Jo-a, Kim Hee-jung, Park Seo-ji, Kim Young-sun,

Genre:Horror, Thriller,

country:South Korea,

Production:Heartpeople,