Yuki is tired from work, and on a whim, he visits a hot spring resort far away where he doesn't know anyone. There he meets Mayuka, who is standing alone and lonely, and the two hit it off. They became absorbed in each other's bodies, sweating and absorbed in the pleasures of each other's bodies. Mayuka and Yuki are enjoying their fleeting love affair. They forget everything and fall in love with each other, and the pleasure of infidelity is found in the steam...