Kang Jae-hee, a former special unit called a human weapon alive with superior power and combat skills than a man. Now, after being discharged from the military, she became a police officer in the Republic of Korea. To Jae-hee, who was working hard today to realize the justice of the Republic of Korea, A huge mission is given one day. It's none other than the second generation of chaebols of Samgang Group, Korea's leading company, Become the secretary of director Yoon Yi-joon, a suspect in the murder of a female secretary, to reveal his sins! However, the role of Sangtorai Yoon Yi-jun's secretary among Sangtorai For Jaehee, it was scarier than war, compatibility, and Mama. Besides... “Secretary Kim, this may sound sad, but I came to like Secretary Kim!“ Even the urgent confession?! "Excuse me..." But... I'm a man now...😕? Ununderstandable retaking is an unimaginable romantic comedy between a four-dimensional man and a girl crush iron wall girl!!