Nana is living a happy life with her husband. One day, her husband's company makes a mistake and is ordered to accompany Nana as a companion on a company trip of a client, Mitsui Koko. Nana decided to work as a companion reluctantly, believing in her husband's words. On the day of the employee trip, it was already dark and Nana couldn't hide her nervousness. Nana dressed in an obscene costume is thrown into the banquet hall of the drunken beast-like employees.
