Plot

On Christmas Eve, at the luxurious Tower Sky twin tower building in central Seoul, residents and staff members busy themselves with Christmas preparation. A small fire in the restaurant kitchen attracts the attention of Tower Sky staff member Lee Dae-Ho (Kim Sang-Kyung), who notices a faulty water sprinkler system. Building owner Jo (Cha In-Pyo) disregards the warning and goes ahead with the evening's Christmas party.

Helicopters are hired to circle the building and spray the building with man made snow during the Christmas party. Residents gathered for the event are amazed by the spectacle. Their amazement soon turns into terror when a helicopter loses control and crashes into the building, setting off a chain off horrifying events that threatens the lives of all the residents.

Cast

• Sol Kyung-Gu as Kang Young-Ki
• Son Ye-Jin as Seo Yun-Hee
• Kim Sang-Kyung as Lee Dae-Ho
• Kim In-Kwon as Oh Byung-Man
• Do Ji-Han as Lee Sun-Woo
• Park Chul-Min as Chef
• Song Jae-Ho as elderly man Yoon
• Lee Ju-Sil as Madam Jung
• Kim Sung-Oh as In-Gun
• Lee Han-Wi as Church Elder Kim

Trailer