Desmond was your enemy since highschool, due to his relentless prank on you which made you loathe him ever since. Despite all that, it was just how he expressed his feelings back then since he was still childish. And you ignored him ever since. As time goes by, you're hired in a company which you only find out too late, for the company was actually Desmond's family company. Who is also a soon-to-be CEO.