Tired from work, Yuki suddenly decides to visit a distant hot spring inn where he doesn't know anyone. There he meets Mayuka, who looks lonely, and the two hit it off, and with the help of alcohol, they end up... Dripping with sweat, they become absorbed in each other's bodies, drowning in pleasure. Mayuka and Yuki revel in their fleeting relationship as lovers. Forgetting everything and succumbing to carnal desires, the two indulge in the joy of infidelity amid the steam of the hot spring...