In a prep-class for year-end exams, a sadistic killer puts the students through mind-games in order to save each other.

At the same time as murder suspect Yeo-hoon is brought unconscious to the emergency room following a shooting incident, an assailant breaks into the house of Tae-jun, the emergency room's doctor ...

In 2025, a scientist on the verge of making a major discovery related to time travel is suddenly put in peril when a rival kidnaps her young son and demands a hefty ransom: her entire research.

Following the story of Ran, who confronts a mysterious organization by participating in a no-rules deathmatch after discovering her missing younger sister Yuzuki is involved in a crime. With ...