The average citizen Dong-won and his family move into a house bought after years of hard work. Filled with happiness, he invites his colleagues for a housewarming party, but the heavy rain during the night before creates a gigantic sinkhole, and in a mere minute, it swallows up the whole house and the people inside. Hundreds of meters down the hole, Dong-won, his neighbor Man-su, and the unfortunate guests must find their way out. Rain starts to pour down, filling the sinkhole with water, and they’re running out of time.
Elenco: Cha Seung-won , Kim Sung-kyun , Lee Kwang-soo , Kim Hye-jun , Nam Da-reum , Kim Hong-pa , Ko Chang-seok , Kwon So-hyun , Kim Jae-hwa , Na Chul , Jung Young-sook , Han Hye-rin , Jeong Yun-ha , Lee Hak-joo , Jang Gwang .