Detective Hwang Jun-ho successfully infiltrates the deadly games by disguising himself as one of the masked workers. As he investigates, he uncovers that both the players and the staff operate within a highly secured facility located on a remote island. While he secretly gathers information, the players, now more aware of the brutal nature of the competition, begin forming alliances to increase their chances of survival. Gi-hun, Sang-woo, Player 001, and Player 199 join forces, hoping to navigate the challenges together.
Meanwhile, Player 067 sneaks into an air vent and spies on the workers, witnessing them melting large pots of sugar. Sensing that this might be a clue for the next challenge, she keeps the information to herself. Sang-woo, however, also deduces the nature of the upcoming game but chooses not to warn his teammates, instead selecting the easiest option for himself.
The second game, Ppopgi, requires contestants to carefully extract a pre-stamped shape—a star, triangle, circle, or umbrella—from a brittle dalgona (honeycomb candy) within a strict ten-minute time limit. Gi-hun, unaware of the difficulty levels, picks the umbrella, the most challenging shape. As the game begins, he struggles but ultimately succeeds by licking the back of the candy to dissolve it rather than carving it out.
Elsewhere, Player 212, a cunning and manipulative woman, smuggles in a lighter and secretly assists Deok-su in cutting out his shape, securing his survival. Meanwhile, one of the players, in a desperate act of defiance, takes a guard hostage and demands to see his face. Upon unmasking him, the player is shocked to discover that the worker is just a young man. Overcome with despair, the player turns the gun on himself and commits suicide. The masked figure known as the Front Man swiftly intervenes, executing the unmasked guard for breaking the strict rules of anonymity, reinforcing the ruthless control exerted over both players and workers alike.
Episode-4
Player 111, a disgraced doctor, secretly collaborates with a group of corrupt guards to harvest organs from deceased players, selling them on the black market in exchange for inside information about upcoming games. This illegal operation allows him to gain an unfair advantage over the other contestants.
Meanwhile, tensions escalate when Deok-su kills a player who accuses him of hoarding extra food. Surprisingly, the guards do not intervene, and instead, the prize pool increases with each death. Realizing that eliminating competitors can raise the prize money, Deok-su and his gang provoke chaos after lights out, instigating a brutal, free-for-all brawl in the dormitory. As players attack one another in the darkness, Gi-hun and his group manage to survive the onslaught by sticking together. In an effort to strengthen their bond, they finally exchange names—Player 199 is revealed to be Ali Abdul, a migrant worker from Pakistan, and Player 067 is Kang Sae-byeok, a North Korean defector. However, Player 001, suffering from a brain tumor, struggles to recall his own name. Meanwhile, Han Mi-nyeo (Player 212), a cunning and unpredictable woman, secures her place in Deok-su’s gang by seducing him.
The third game requires players to form teams of ten, without knowing what the challenge entails. Sae-byeok recruits Player 240, a quiet girl around her age, to join Gi-hun’s group. When the game is revealed to be Tug of War, the contestants are horrified to discover that the losing team will be pulled off a raised platform to their deaths. Having received a tip from Player 111 about the nature of the game, Deok-su strategically selects only physically strong men for his team and ruthlessly rejects Mi-nyeo. Feeling betrayed, she joins Gi-hun’s team, which is at a disadvantage with its mix of physically weaker players, including elderly Player 001 and the two young women.
Deok-su’s team easily dominates their first match, sending their opponents plummeting to their deaths. Gi-hun’s team, however, finds themselves in a desperate struggle against a formidable all-male team, with their survival hanging by a thread.