After making a series of mistakes at work and suffering from a broken heart, Shinji becomes desperate and wanders off to a hot spring resort on his way to work. There he meets a married woman named Nami, who he hits off with, and the two of them head to a room together... As they reveal their emotional scars to each other, their bodies soon become intertwined and they are swept away by the pleasure of infidelity. Forgetting about her daily life, Nami gives herself over to this casual encounter and indulges in fleeting pleasure. The two blend into the steam of the hot spring, sweating and devouring each other's desires, but...