First rule of the workplace: don't date your boss. It's a rule that should be easy for workaholic lawyer Hyeonseo Cha to follow, especially since her new boss, Jeonghyeok Seo, has a reputation of being a heartless playboy who only cares about money. But despite his infuriating smirk and arrogant tone, Hyeonseo finds herself slowly being drawn to him as he wears down the armor of cold indifference she's worn over the years. But does he feel the same towards her? Or is Hyeonseo just setting herself up for a devastating heartbreak?