Player 009, like the other contestants, joined the Squid Games due to being in significant debt. She, along with 364 other contestants, made it past the first game. During the vote on whether to end or continue the games, she voted to continue. In the Six-Legged Pentathlon, she played Biseokchigi in which she and her team (including Park Gyeong-seok) succeeded and survived the second game. She voted O to continue in second round. Also in Mingle, the third game , she survived again. She voted O to continue in third round. She can be seen beside of Player 394 after the specialgame.
