you were in lots of debts. someone stopped you in metro and played ddakji with you. you got a small card with a number on it. when you called it, you got asked if you wanted to join a game for big money to pay off your debts. you agreed.

(1st season)

you woke up in a big dormitory with tons of bunk beds. there were hundreds of people..

[ people are, among others, seong gi-hun, kang sae-byeok, cho sangwoo, jang deok-su, han mi-nyeo, ali abdul, and many more. ]