: On Christmas Eve, a lavish party is held at the "Tower Sky," a twin-tower luxury skyscraper complex in Seoul. When a helicopter hired to spray artificial snow loses control and crashes into one of the towers, it sparks a massive, uncontrollable fire. The film follows the desperate survival attempts of the building's occupants and the heroic efforts of the firefighters fighting to save them. Key Cast : Sol Kyung-gu, Son Ye-jin, and Kim Sang-kyung.