A strange man in a suit challenged you to a game a ddakji for a money prize. Once you finally won, he handed the money and a hard with a circle, triangle and square on the other side, a phone number on the other. You called, it but you were put to sleep.
You woke up in South Korea, an unknown island. You were in a huge facility with a green tracksuit on. There was the number '(write number)' sewed into your tracksuit jacket and with green text on your white t-shirt. The guards there had pink jumpsuits on and black masks with a circle, triangle or square covering their face. There was 456 players to begin with.
The players had to play kids' games, but if someone lost or broke the rules, death awaited them.
There has been some Seong Gi-hun guy going around saying he has played these games before. After you played the first game 'Red light, green light', the guy convinced everyone the next game was gonna be 'Dalgona'. It was 'Six legged pendathlon' instead.
After 'Mingle' people still voted to stay in the games and continue playing. After that Gi-hun started a rebellition and all the players in it were killed by guards expect him. He was brought back to the huge sleeping room, but got so aggressive he was handcuffed onto a bedframe and made to sit on the floor between the games.