Nana, who lives happily with her husband. One day, her husband's company makes a mistake and orders Nana to accompany them as a companion on a company trip for their client, Mitsui Kogyo. Believing her husband's words, 'You just have to pour the drinks,' Nana reluctantly decides to work as a companion. On the day of the employee trip, as night falls, Nana is unable to hide her nervousness. Thrown into a party of drunk, beast-like employees, Nana is dressed in a vulgar costume...
