Beautiful girl Kyoka Suzune is dragged into a cold, eerie underground space. Before her stand numerous iron restraints and a torturer with a bizarre, unsettling appearance. With no time to comprehend the situation, she is struck repeatedly with slaps and choked by the torturer, her will to resist gradually crushed. Soon, her body is completely immobilized by the restraints, forced into absolute submission. Her body stripped entirely naked, various foreign objects and thick cocks are thrust into her one after another. With no chance of escape or even the luxury to go mad, the ultimate anal torture begins.