Amid a tense inheritance fight, a charming heir clashes with his hardworking employee who's known for her irresistible smile — which he cannot stand.

Lee Jun-ho, Yoona, Go Won-hee, Kim Ga-eun, Ahn Se-ha, Kim Jae-won, Kim Sun-young, Son Byung-ho, Kim Yeong-ok, Choi Tae-hwan, Lee Ye-joo, Kong Ye-ji, Kim Jung-min, Choi Ji-hyeon, Kim Chae-yoon, Lee Ho-seok, Cha Seo-hyun, Kim Ho-yeon, Bae Min-jung, Park Hyo-bin, Jung Yoo-na, Byeon Ye-jin, Yoon Tae-yi, Lee Ji-hye, An Woo-yeon, Lee Yo-seong, Han Gi-joong, Kim Min-a