Taekang Group's successor, Yoon Yi-jun, is the prime suspect of a shocking murder. To uncover the truth, Kang Jae-hee goes undercover as a male secretary to keep an eye on Yi-jun. The closer they get to what really happened, the closer Yi-jun and Jae-hee become. Will Jae-hee, who is hiding her identity, and Yi-jun, who is hiding a secret, be able to let their true feelings be known to one another?
Yim Si-wan
Yoon Yi-jun
Seorina
Kang Jae-hee
Kim Jung-hyun
Kim Si-hyeon
Yeon Woo
Lee Hye-jung
Ryu Seung-soo
Kang Seok-goo
Park Jun-myun
Jo Sook-ja
Jeong Han-seol
Assistant Jeong Da-woon
Kim Do-yoon
Park Min-hwan
Jung Yoo-min
Han Eun-yeong
Kim In-kwon
Park Bong
Kim Ki-bang
Jeong Wan-gu
Nam Hae-jun
Kim Seok-jin
Ahn Sang-woo
Ma Hee-do
Choi Jin-ho
Yoon Tae-sik
Hong Eun-hee
Yoon Mi-jin
