Duty After School S1, E2

When mysterious alien spheres start invading the world, high school students are called upon to join the world's first war against extraterrestrial forces.

Director: Ha Il-kwon

Cast:Kim Ki-hae , Shin Myung-sung , Shin Hyun-soo , Lim Se-mi , Ahn Do-gyu , Kim Min-chul , Kim Su-gyeom , Ro Jong-hyun , Woo Min-kyu