Nana lives a happy life with her husband. One day, her husband's company makes a mistake and he orders her to accompany the company trip of their client, Mitsui Kogyo, as a companion. "All you have to do is pour the drinks," Nana believes her husband's words and reluctantly decides to work as a companion, but... On the day of the company trip, the sun has already set and Nana can't hide her nervousness. Nana, dressed in an obscene costume, is thrown into the banquet hall where the drunken employees are like beasts...