Who's Behind Ms. Do?

Yoo-mi goes to check out Na-eon's pop-up store. She expected it to be shabby and a failure, but the store was a huge success, and Na-eon's team even saved up a lot of budget. Feeling frustrated, she goes to meet someone who has been behind her, and Eun-ho follows her. Meanwhile, Yoo-mi tells Eun-ho about an upcoming project.