It's the summer vacation before Kyuhyun's senior year in college, and like others in his social class he is trying to make the most of what is perhaps his last shot at a chance of months-long freedom before being buried under school work and ultimately, a post-graduation job or grad school. Fresh out of a break up, he is simply trying to regain some happiness and keep summer break low-key. All is going according to plan, but then he meets fellow rising-senior Choi Siwon.