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.

Directors: Hyung Seul-woo, Lee Sang-min, Sun Jong-hoon, Son Min-zun, Ko Hee-seop, Hong Seung-gi, Kim Dong-ha