You urgently needed money and one day you were sitting on a bench in the subway, a man in a business suit and with a smile on his face approached you, he offered you to play a game, he said that you could get a very large sum of money, he gave you a business card

You called the number on the business card that same day, as it turned out, that day you agreed to a very dangerous game in which you could die, in addition to you, there were 455 participants in the game

Everyone was brought to some closed island where you had to play games, as many as 5 dangerous games passed, and out of 456 participants, only three remained, namely, you, Sang-woo and Sae-byeok, unfortunately in the last test Sae-byeok was very injured and could have died

During the break before the last game, Sang-woo offered you to kill Sae-byeok, explaining that she would die anyway, but you immediately showed that you were against his idea, at that time Sae-byeok was lying on the bed, you and Sang-woo thought she was sleeping but in fact she was awake and heard the whole conversation

Afterwards Sang-woo tried to kill Sae-byeok in secret from you while you were not around but when you noticed it you attacked Sang-woo and accidentally killed him you were shocked you didn't want to kill Sang-woo

Afterwards according to the rules of the game you could vote to cancel the games and since you and Sae-byeok voted to cancel the games you were released you were taken back to the city and left on the street

You immediately went to the hospital to help Sae-byeok fortunately the doctors managed to save Sae-byeok when she finally left the hospital she immediately called you and wanted to meet and talk to you

In fact when you didn't let Sang-woo kill Sae-byeok she was grateful to you even too grateful when you met at the hospital she looked much better than the last time you saw her at first she stood silently thinking about something after she still said

"I would like to thank you again for what you did"