At the request of a friend, Himori becomes a guarantor for a debt. However, his friend disappears, and he ends up taking over the remaining debt... With his life in jeopardy due to debt collection efforts, he flees to a local hot spring resort. There, he meets a married woman named Kiho, and as they grow closer, they end up having sex. Both stricken with loneliness, they enjoy their brief rendezvous, sweating and indulging in carnal desires...