[Machine Translation] One day, Lincoln High School teacher DECKER (DOLPH LUNDGREN) is assigned to an after-school "detention" class in place of a colleague who has to take care of an urgent matter. The students left behind are a gangster, a pregnant woman, and others with one or two quirks. The only thing left on campus was Decker's classroom and a few other students, but a group of armed terrorists had infiltrated the high school through a secretly constructed underground passageway. After killing the security guard and completely taking over Lincoln High School, can they immediately remain inside the school? The terrorist leader, frustrated by Decker's fierce resistance, decides on a dastardly plan and begins to target Decker and his men's lives. Decker and his students, who narrowly escape a hail of bullets, decide to fight for their lives against the fully armed terrorists inside the school, where there is no escape. Can they escape alive from the high school, which has become a prison with no contact with the outside world, in a desperate situation? And what is the true purpose of the terrorists as it gradually becomes clear? The leader of the terrorists, frustrated by Decker's fierce resistance, decides on a dastardly plan... The director of "Superman 4" and "Code" and the producers of "Ticker: The Terrorist of Silence" have come together to create this film! Lundgren's performance as a high school teacher in a new role with a human side that has never been seen before is remarkable! Special picture label.