Journalist Sang-jin uncovers the existence of the so-called 'Troll Factory' while investigating an online public sentiment manipulation story, and is confronted with an unbelievable truth.
| Actor | Role |
|---|---|
 Son Suk-kuLim Sang-jin | Lim Sang-jin |
 Kim Dong-hwiChAtTaTkat | ChAtTaTkat |
 Kim Sung-cheolJjingForkKing | JjingForkKing |
 Hong KyungPEpteK | PEpteK |
 Lee Seo-hwanPark Woo-sung | Park Woo-sung |
 Choi Deok-moonChoi Pyeong-ho | Choi Pyeong-ho |
 Lee Sun-heePyo Ha-jeong | Pyo Ha-jeong |
 David LeeDa-wit | Da-wit |
 Kim Hie-wonSun-woo | Sun-woo |
 Kim Jun-hanGi-hong | Gi-hong |
 Kim Kyu-baekInformant X | Informant X |
 Nam Jin-bokExpressway Corporation | Expressway Corporation |
 Kim Han-solShin Hyun-sik | Shin Hyun-sik |
 Yoon Se-woongDeputy Director | Deputy Director |
 Min Moo-jeDeputy Director | Deputy Director |
 Oh Kyu-taekDeputy Director | Deputy Director |
 Hong Seok-binLee Yong-chan | Lee Yong-chan |
 Oh Ye-juLee Eun-chae | Lee Eun-chae |
 Lee Chan-yuAng-ma | Ang-ma |
 Cha Young-juReporter | Reporter |
 Jang Se-wonTaxi | Taxi |
 Kim So-minPark Woo-sung's Son | Park Woo-sung's Son |
| BBok Se-hoonNot listed | Not listed |