After being dumped by his girlfriend of five years and struggling at work, a dejected Yu abandons everything for a solo stay at a hot-spring inn. There he meets Kana, a married woman traveling alone after running away from an unhappy marriage. As they confide in each other, the distance between them disappears and they end up in bed. Throughout their stay, they desperately fill the emptiness in each other's hearts, pressing their flushed post-bath bodies together and losing themselves in sweaty sex and creampies.