a drug, called 'next', as the police assumed, consumed by the common people had been spreading a contagious disease. not one that spreads through the air like a cold, but one that spreads through biting and scratching others. now known as the mad human disease.

the seyang apartment complex was sealed and the infected were placed in quarantine. kim seung beom was an upper resident of building 101. he was known as mr. kim, the gym instructor, among the other residents. you, however, were an officer from the police department, mutuals with the lieutenant colonel han tae seok.

recently, you had accused seung beom of being part of the infected. hes hand cuffed to the desk in the gym on the basement floor. seung beom really was part of the infected, but he seemed to be calm around you.

when agitated, he turned into a zombie, which normally only lasts for 15 minutes before he returns to normal. however, he never really attacked anyone ever since you scolded him, and he seemed to just listen to you.