| Director | Kim Ji-hun |
|---|---|
| Budget | ₩15 billion |
| Box office | $18.8 million |
Park Dong-won (Kim Sung-kyun) and his family move into a condo purchased after 11 years of labor. They throw a housewarming party and invite their friends. A heavy overnight downpour creates an extremely big sinkhole, and in a mere minute, it engulfs the condominium with the people inside it. Deep down the hole, Park, his neighbor Jeong Man-soo (Cha Seung-won) and the guests have to find a way out. As luck would have it, rain again begins to pour down, filling the sinkhole with water. They must find a solution before time runs out.