On a rainy trip, Hina is brought by her lover and becomes aroused as her soaked clothes cling to her skin, getting pounded intensely. Meanwhile, Nanami is thrown into a hot spring fully clothed, her wet body teased and tormented. Yukana climaxes during sex while being spied on, writhing in ecstasy as lewd outdoor encounters unfold across the journey. A passionate tale of infidelity unfolds in nature, woven together by rain and hot springs.