The story revolves around six childhood friends who gather for a retreat at a cabin, each contributing a small amount of money for food and a lottery ticket. When they win the lottery, tensions rise as greed takes over, leading to mysterious deaths and betrayals. As the group fights for the winning ticket, the situation escalates into violence, revealing darker sides of human nature.
Donghwan is unemployed. One day, he applies for a quiz for a no charge airline ticket on the Internet. The next day, he receives a phone call asking him to come to an office in Jongno-gu, Seoul because he has won the quiz, where he will receive the free round-trip ticket to Thailand. But for getting free tickets, he has to pay a high price there...
It is a late night and raining hard when suddenly a strange woman, wearing only lingerie, runs into a man, fishing at the lake, and asks him for help. Soon the man finds out that the woman is a mute then agrees to follow her. The woman brings the man to a hillock where her husband is tied up and bleeding, screaming to save his life in a large bag.
