On a night of pouring rain, married Ren and office worker Tatsuya discover their vacation rental has been double-booked. With no way to reach the management company, the strangers have no choice but to spend the night together. Awkward conversation reveals how lonely they both are, and every time they reach for each other, the emotional distance between them shrinks. As thunder and rain echo outside, Ren tries to fill the emptiness left by her husband’s overseas assignment. Once their bodies join, neither can stop, and despite knowing morning will separate them, they surrender to a night of adulterous passion.