Yeon-jeong is a girl crush who has a sexy body and good education. She became a team leader by beating up men her age. Yoo Ah-rin, an intern, keeps getting on her nerves. All she is, is a local university graduate, with a pretty face. A corporate slave! Feeling pity for Ah-rin, who is in charge of her bosses' chores, Yeon-jeong claims to be a shooter to protect Ah-rin from male employees, and Ah-rin, a new employee who thought it was a mugwort, starts to covet her things little by little. Ah-rin, a new employee who she only thought was an idiot, begins to covet her love affairs little by little.