Hyeon-hae faces the worst possible situation right before his interview at Scanvic, a foreign construction company. First, a passerby spills coffee on her shirt. Then, she receives a sexually harassing comment from a man who later apologizes. Things get even worse when he meets her ex-boyfriend as one of the interviewers, and the man who made the harassing comment is the other interviewer. Hyeon-hae, who simply wants to move to a good company and live a better life, unexpectedly meets a man named Seol Gong-woo. On his advice, Hyeon-hae joins his team, but even before he can fully adapt to Scanvic, he experiences an unprecedented situation: he is strictly marked by an alpha. Seol Gong-woo, the man who sexually harassed his, offers her sexual help to remove the mark.