Mamoru Suzuhara, a quiet high school student engrossed in military studies, musters courage to invite his crush, Aya Chiyono, to escape with him upon learning of her imminent relocation. Alongside four classmates, they retreat to the deserted Satomi Coal Factory for a camping adventure. As they revel in their newfound freedom, they soon realize they might not be the sole inhabitants of the factory. Adapted from the novel, 'Bokura no Nanokakan Sensou' unfolds as a tale of youthful rebellion escalating into a confrontation with the adult world. Amidst the chaos, the teens grapple with their emotions and strive to safeguard their cherished bonds.