Seo Jae-eun, a competent assistant manager at DH International, breaks off her engagement after her boyfriend's misdeeds and, in a moment of impulsive anger, spends the night with her boss. But this man... is a single father? "Assistant Manager Seo, do you want to pretend that last night never happened?" Whether to maintain or break off this relationship is her choice. It's fine. Being attracted to something charming is only a natural human instinct.