1x1 - Field Trip

December 4, 2023

When class 2-3 arrives at a retreat center, the rest of the classes are nowhere to be found. Their homeroom teacher goes out to look for the missing classes, and they are left alone in the building. Meanwhile, Yoon-seo and all of her classmates get a message out of the blue. With the rules of the game, each one of them receives a role, and the game begins.

1x2 - Figuring Out the Rules

December 4, 2023

As morning dawns, the kids try to figure out what this game is actually about. They realize that they can’t leave the boundary indicated in a white line all around the retreat center. Some kids try going up the trail to see if there’s a break in the line. However, things only seem to get worse as they start testing the rules and doubting each other more and more.

1x3 - Rifts Begin to Appear

December 4, 2023

The kids feel guilty and sad about the ones who have died, and this pushes them to drift apart and blame one another. Kyung-jun, the class bully, continues to pick on others and use them to test the rules of the game. Meanwhile, Class President Jun-hee has an idea to refuse to vote for anyone in the game that night.

1x4 - A Frenzied Bloodbath

December 4, 2023

As Jun-hee’s plans to refuse to vote backfires, a bloodbath sweeps the assembly hall. The remaining kids are as divided as ever in the aftermath of losing so many kids in one night. Meanwhile, Yoon-seo is suspicious of the visions she keeps having. She decides to scope out the mysterious tunnel that she found.

1x5 - The Photo Book

December 11, 2023

Woo-ram, the one with the highest votes so far, is about to lose his mind out of fear, and Kyung-jun, the one with the second highest votes, tries to take him down before midnight. Meanwhile, Yoon-seo is stuck on the second floor and finds a photo of the girl she saw in her dream.

1x6 - Yoon-seo and Jun-hee

December 12, 2023

Kyung-jun tries to control the rest of the survivors after he catches the second Mafia. He wants to get back at Jun-hee and the rest who voted for him instead of Woo-ram. Furthermore, Kyung-jun and his friends start to suspect Yoon-seo, who knows where to check the security camera footage.

1x7 - Find the Host

December 13, 2023

Seung-bin is the next target who gets killed by the Mafia overnight. The survivors find him dead on the floor, and one of his friends is washing the bloody clothes in the toilet. Meanwhile, Yu-jun witnesses Kyung-jun and Jin-ha walking out of the building.

1x8 - No One Can Be Trusted

December 14, 2023

Uncovering yet another fatality, the students find themselves gripped by an encroaching sense of fear, with death looming ever closer. The distinction between Mafia and non-Mafia individuals now appears inconsequential, intensifying their apprehension. As a footprint and a message left on a wall emerge, the list of potential targets is narrowed down to two, heightening the emotional tension just before another vote is about to take place.

1x9 - Two Citizens Down

December 18, 2023

The deaths of Jin-ha and Kyung-jun, both innocent Citizens, heighten the students' sense of entrapment. The prevailing unease about the unreliability of seemingly plausible information forces them to prioritize unmasking the Mafia swiftly for their own survival. Meanwhile, So-mi, for some reason, begins to cast doubt on Na-hee, setting the stage for a sudden turn of events.

1x10 - One Mafia Down

December 19, 2023

With Na-hee exposing her identity, everyone discovers that So-mi's the Mafia, placing Na-hee in danger with her police role now known. Holding herself responsible for her friends' deaths, Na-hee devises a plan to unveil the Mafia even after her potential death. Although clues surface, they are too ambiguous to conclusively identify the Mafia. Meanwhile, the focus shifts to Mi-na as the next target in the voting process.

1x11 - The Last Mafia

December 20, 2023

Everyone corners Yeon-woo as the Mafia because he got wounded. He tries to defend himself, but he gets voted in the end. Da-bum feels relieved, and Jun-hee catches that moment. He confronts Da-bum and tells him not to kill Yoon-seo and Jung-won. Yeon-woo’s identity is revealed, and Yoon-seo finds out who the last Mafia is. Meanwhile, Da-bum wants to end the game to avoid being suspected.

1x12 - The End

December 21, 2023

The Mafia Game nears its conclusion as more classmates are executed. Da-bum continues to threaten the remaining students’ lives. Meanwhile, Jung-won faces a dilemma with her life at stake.

Lee Jae-in

Lee Yoon-seo

Kim Woo-seok

Kim Jun-hee

Choi Ye-bin

Oh Jung-won

Cha Woo-min

Ko Kyung-jun

Ahn Ji-ho

Jin Da-bum, Jin Da-beom

Jeong So-ri

Kim So-mi

Jeong So-ri

Kim So-mi

Kang Seol

Choi Mi-na

Oh Jung-taek

Cha Yoo-joon, Cha Yu-jun

Song Byeong-geun

Im Eun-chan

Kim So-hee

Baek Eun-ha

Bae Jae-young

Kim Jin-ha

Chun Young-min

Park Ji-soo

Suh Dong-hyun

Park Woo-ram

Do Byeong-hun

Kim Dong-hyun

Hong Min-gi

Jang Hyun-ho

Park Ju-won

Ahn Na-hee

Park Yoon-ho

Heo Yul, Heo Yool

Kim Gyu-bin

Lee Joo-young

Hong Seong-pyo

Nam Yeon-woo

Park Sang-eun

Shin Seung-bin

Kim Min-seo

Choi Ju-won