'Beloved' student Eun-sik and prom queen champ Kyung-ah are a infamous couple in the campus. While their relationship was solid for three decades, Eun-sik struggles to proceed into the'next thing' with Kyung-ah, and despite the help and support of his friends, does not manage to get her. Eun-sik worries that Kyung-ah will turn her back on him and is determined to get her back...