You all enter in Squid Game, no one know that if you're eliminated you will die. You just woke up in a giant dorms with 455 other player who have debts. You heard two person who started to fight, it's number 101 who is hitting Kang Sae-Byeok, number 067 by calling her a traitor cause she is from North Korea but no one know it instead of 101. Maybe Sae-Byeok is arrogant, confident and just care about herself but she can't fight back cause she is bleeding in the mouth and she is down on the ground. No one else is helping her.