To make it out of the music room and onto the roof, the students put into action their most perilous plan yet. Elsewhere, Jae-ik comes across a setback.
Quest roles:
Ahn Seung-gyun(Oh Joon-yeong), Jo Dal-hwan(Jo Dal-ho), Yoon Kyung-Ho(Jung Yong-nam), Lee Eun-saem(Park Mi-jin), Bae Hae-Sun(Park Eun-hee), Ahn Ji-ho(Kim Cheol-su), Ha Seung-Ri(Jang Ha-ri), Son Sang-Yeon(Jang Wu-jin), Kim Bo-yoon(Seo Hyo-ryung), Jin Ho-eun(Jung Min-jae), Lim Jae-hyeok(Yang Dae-su), Kim Jin-young(Kim Ji-min), Oh Hye-soo(Min Eun-ji), Oh Hee-Joon(Son Myeong-hwan), Lee Ji-hyeon(Lee Cheong-san's mother), Yang Han-yeol(Yoo Joon-sung), Kim Jong-tae(Jin Seon-mu), Lee Myung-ho(Medical Officer), Lee Si-hoon(Orangibberish), Ahn Se Bin(Se-bin), Lee Min-goo(Lee Jin-soo), Park Jae-cheol(Jeon Ho-chul)