Sooyoung and Kyuhyun had long been bestfriends since childhood. Their families are close because they are a good in terms of business. Their family intend to unify their business to develop an advanced IT companies in South Korea and beat their rival The Shim's. Choi family has only a daughter that is Sooyoung as well as the Cho family that has only a son that is Kyuhyun. They want to unify their company by way of the marriage of their children. Kyuhyun and Sooyoung agree to marry but they asked to be given a month to spend their bachelorhood. What will happen to them in a month?

Starring!