Nami works for an underwear manufacturer. The employee who wins the presentation at this company is selected as the project leader for the new underwear. However, the executives have a hidden agenda. She is secretly in love with her unreliable boyfriend with a big dick, she is jealous of the female colleagues who she thought were her allies, and her boss uses promotion as bait to commit power harassment and sexual harassment. The company is a hopeless black company, but Nami, who has a strong desire to improve herself, goes to work today for her own sake and to contribute to society.