Hirai, the owner of an inn in a certain hot spring resort, and Kai, the waitress, are spending their days in a sloppy manner, making little effort to manage the inn. They have been squandering away the inheritance left by their predecessor, but they have reached their limit, and recently they have been receiving threats from debt collectors. One day, two female students, Mio and Nana, come to work part-time as an intern. Kudo, the debt collector, who knows the situation, makes a wicked proposal. The proposal is to turn the two into companions who provide sexual entertainment.