After awakening from a nightmare, Nobuaki Kanazawa is thrust into a deadly scenario when a mysterious figure, the 'King,' initiates the ominous 'King's Game' through a chilling text message. Bound by the King's strict rules, Nobuaki's class dismisses the message as a prank until gruesome deaths unfold as punishment for disobedience. As the commands escalate in brutality, fear grips the students, and a harrowing question lingers: who will survive this sinister game of life and death?