Lee Bo Young, Jo Sung Ha, Na-Eun, Han Jun Woo, and Jeon Hye Jin have joined the leading cast of JTBC's upcoming new office drama series, 'Ad Agency' (working title). 

The story follows the life of a woman named Go Ah In (played by Lee Bo Young), the first ever woman to earn a board member position for South Korea's biggest advertisement agency. On the outside, Go Ah In is the definition of class, elegance, and perfection, having built up an impenetrable image for herself in order to make it in the world of men. A creative director for VC Planning, she has maintained her position at the top of her industry for 19-years. But it's not enough. Defying all expectations, Go Ah In aims to rise to the very top, regardless of what that position might be. 

Joining Lee Bo Young at VC Planning is director of planning Choi Chang Soo, played by Jo Sung Ha. Aiming for the title of the company's next chief executive officer, Jo Sung Ha is expected to showcase a fierce rivalry with Lee Bo Young.

Next, Na-Eun joins the cast as as Kang Han Na, the third generation daughter of the family that owns VC Planning, while Han Jun Woo takes on the role of Park Young Woo, a personal secretary who has managed Kang Han Na's life for years. Finally, Jeon Hye Jin takes on the role of a copywriter for Go Ah In's team, Jo Eun Jung. 

JTBC's 'Ad Agency' is expected to air some time in early 2023. Do you find the premise interesting so far?