Hoping to win easy money, a desperate Gi-hun agrees to take part in an enigmatic game; not long into the first round, unforeseen horrors unfold.

Split on whether to continue or quit, the group holds a vote; their realities in the outside world may prove to be just as unforgiving as the game.

A few players enter the next round, which promises equal doses of sweet and deadly; Jun-ho takes the opportunity to sneak his way inside.

As alliances form among the players, no one is safe in the dormitory after lights out; the third game challenges Gi-hun's team to think strategically.

Gi-hun and his team take turns keeping guard through the night and the masked men encounter trouble with their co-conspirators.

Players pair off for the fourth game; Gi-hun grapples with a moral dilemma; Sang-woo chooses self-preservation; Sae-byeok shares her untold story.

The Masked Leader welcomes VIP guests to the facility for a front-row viewing of the show; in the fifth game, some players crack under the pressure.

Ahead of the last round, distrust and disgust run deep among the finalists; Jun-ho makes a getaway, determined to expose the game's secrets.

The final round presents another cruel test, but, this time, how it ends depends on just one player; the game's creator steps out of the shadows.