Two people from Class Two die. To prevent chaos, this news is not yet known throughout the entire school. After their deaths, students of Class Two get sick of all the hardcore training and try to escape school to go back to their homes. However, all their attempts go to waste and the biggest attack of the spheres begins.
Elenco: Shin Hyun-soo , Kim Ki-hae , Lim Se-mi , Ahn Do-gyu , Kim Su-gyeom , Woo Min-kyu , Yeo Joo-ha , Ahn Da-eun , Lee Yeon , Kim Min-chul , Kwon Eun-bin , Moon Sang-min , Choi Moon-hee , Sohee , Ro Jong-hyun , Ji Min-hyuk , Yoon Jong-bin , Shin Su-hyun , Hong Xa-bin , Shin Hye-ji , Lee Soon-won , Shin Myung-sung .