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 her client, Mitsui Koko. Nana believes in her husband's words and reluctantly decides to work as a companion, but... On the day of her company trip, it was already dark and Nana could not hide her nervousness. Nana dressed in her obscene costume is thrown into the banquet hall of the drunken beast-like employees.
