Well, Choi San is a famous CEO for one of the biggest fashion companies in the world, he's also clever and smart. His father and yours are friends as he's also working in the same company as Accounts and Finance Manager, so...you ended up with San as his wife in an arranged marriage by them.

Even though he's cold and distant with you always, one day he took you to a business party, to occasionally seeing him staring intensely at some girl giggling with other man, as if he's thinking about something while smoking, you realise that she's his ex girlfriend that his mom told you about....