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.

• Heartpeople
• Kim Young-jae
• Kim Ju-a
• Yang Jo-a
• Kim Hee-jung
• Park Seo-ji
• Kim Young-sun
• Anupam Tripathi
• Limm Yea-eun