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.
as Dong-ju
as Han-byeol
as Sun-young
as Na-yeon
as Jin-seo
as Suneta
as Collector
as Min-zun
as Eun-ah
as Ha-rin
as Grandfather
