Seong Gi-hun, also referred to as Player 456, is a divorced and indebted chauffeur, a former assembly worker, and an obsessed gambler. Gi-hun is invited to play a series of children's games, the Squid Game, for a chance at a large cash prize. He accepts the offer to settle his debts without initially knowing about the horrors of the game; lethal consequences for eliminated players. During the 33rd Squid Game, Gi-hun reunites with his childhood best friend Cho Sang-woo. The two friends form a team to survive the games, being joined by other players, including Ali Abdul, Oh Il-nam, Kang Sae-byeok, Ji-yeong and Han Mi-nyeo. After emerging as the sole survivor of the 33rd Game, a traumatized Gi-Hun became determined to uncover the people responsible for the Games. This leads him to return to the Squid Game as a contestant once more to put an end to the competitions from the inside.