In a secluded countryside escape, mother and son Kyoko and Takahiro face a rare rift that ignites forbidden desires. Their annual hot spring trip turns steamy as suppressed passions awaken, blurring the lines between love and lust. Sensual tension simmers in every glance, every touch, as they surrender to a taboo longing that defies their bond. A mature, evocative journey into irresistible temptation and secret cravings unfolds with raw intensity.