Sinkhole

An average citizen, Dong-won and his family move into a house bought after years of hard work. He happily invites his colleagues for a housewarming party, but the heavy rain of the night before creates a gigantic sinkhole, and in a mere minute, the whole house is swallowed up. Hundreds of meters down the hole, Dong-won, his neighbor Man-su, and the unfortunate guests must find their way out.