Determined to provide a ray of light for those under her care, a young nurse navigates the world of mental health and the diverse stories surrounding it.
Each person is graded through a popular vote against the backdrop of a girl's high school and if they receive an F grade, they become legitimate victims of school violence.
Jang Se Chool is the boss of a gang. He has been in love with Kang So Hyun for the past 3 years, even though she constantly rejects him and tries to push him away. Having had enough, she tells him that she can't be with him because she wants to be the first lady of Korea.
Stuck together on patrol of Seoul's Han River, the two officers are faced with emergency situations ranging from terrorism to everyday accidents and other incidents requiring emergency assistance.
Ji-Na works as a contract employee, and appears to live a normal life. One day, she hears that her older sister Ji-Hyun is missing. Ji-Na goes to Rose Mansion Apartment, where unexpected events unfolds.
The infected multiply in droves. Scrambling for their lives, Nanm On-Jo and Lee Cheong-San find safety with others inside a classroom-but not for long.
In need of a cellphone, two students take a risky journey to the teachers' office. Byeong-chan passes on critical information to Detective Song Jae-ik.
The group clears a path to Cheong-an using sound to draw away the zombies, but a new type of threat surfaces. Nam So-ju breaks out of the quarantine camp.
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.
