Choi Won is "the perfect guy" - good-looking, tall and fit with an amicable personality. Although he is very popular with women, he can't have a proper relationship because of his friend, Oh Ha-Na. A romantic comedy about a man and a woman who have been best friends for 20 years (7000 days). They turn 34 and make a pact to be married before 35, and race each other to the altar while “helping” weed out potential suitors. They find that they're constantly dissatisfied with each other’s boyfriends and girlfriends, because they've really been in love all this time.