Season
Episodes
Episode 1
Badly in debt, a man hesitantly joins a mysterious show and meets seven other eclectic strangers. Their first goal? Figure out the rules.
Episode 2
Realizing that an activity rewards them with time, the eight coordinate a plan. But soon, chaos erupts as their strategy doesn't last.
Episode 3
A participant approaches 3rd Floor with a proposal to steer the next activity selection. After, a strategic vote takes place to pick the bathroom location.
Episode 4
One participant establishes rank on the others, making them desperate. Soon, a new game of dares begins — and a savage hand-to-hand fight ensues.
Episode 5
A few floors strategically band together to get an upper hand on the others. But the victims see their salvation in a potential uprising.
Episode 6
Now with the tables turned to their favor, the lower floors plan their endgame. However, the clock keeps winding up as strange, brutal events unfold.
Episode 7
An act of altruism backfires, putting some participants in danger. But a shocking move changes everything — switching the dynamic up once again.
Episode 8
One participant suggests an idea to turn the tides back in their favor. But the show falls into disarray when the result turns out duplicitous.
Cast
Ryu Jun-yeol
Jin-soo / 3F
Chun Woo-hee
Se-ra / 8F
Park Jeong-min
Phillip / 7F
Lee Yul-eum
Yang / 4F
Park Hae-joon
Tae-seok / 6F
Lee Zoo-young
Chun-ja / 2F
Moon Jeong-hee
Moon-jeong / 5F
Bae Sung-woo
Sang-guk / 1F