Shou Takamatsu, a mischievous sixth grader reluctant to grow up, faces a sudden need for maturity when his school is inexplicably transported to a desolate wasteland after a mysterious earthquake. Struggling with scarce resources, external threats, and internal conflicts among students, Shou bears the weight of adapting to this dystopian reality as the adults falter. Penned by horror expert Kazuo Umezu, Hyouryuu Kyoushitsu weaves a gripping tale of survival and mystery as Shou and his classmates navigate the enigma of their entrapment in a hostile world.