From Esthétique:

Ding Jiayu dreams of being a photographer. Her idol is none other than Yung Jo. When Yung Jo’s photography company holds an audition to find a new photographer, Jiayu decides to take a chance. The thing is, Yung Jo’s company doesn’t hire women, so Jiayu has no choice but to dress up as man and enter. Yung Jo takes great interest in Jiayu's talent and makes her his apprentice. It may seem like a dream to work with your idol, but for Jiayu, it's nothing of the sort. She takes a beating from Yung Jo everyday, and since all the crew members think she is a guy..