The story begins three years after Seong Gi-hun successfully won the Squid Game in the first season. This time, he is seen at the airport, ready to fly to the United States to start a new life. However, everything changes when he receives a mysterious message offering him the chance to play again. The message tempts Seong Gi with a fantastic prize, making him cancel his departure. Seong Gi is again involved in this deadly game, determined to guide the contestants to survive.
