Seok-young (Lee Byung-hun) is very popular with women, but in order to find his first love, Jung-in (Soo Ae), he goes to the TV station for help. This incident attracted the attention of reporter Soo-jin (Lee Se-eun) and producer Young-suk (Yoo Hae-jin), who wanted to uncover the truth of the matter. Then the two began to look for Seok-young and Jung-in's past. As the clues got more and more, they discovered an unusual love story. It turned out that Seok-young participated in a college student activity to work in the countryside in 1969. He didn't mind his companions calling him lazy bones and was still idle. One day, he met Jung-in who had lost her parents, and fell in love with her at first sight. He was deeply attracted by Jung-in's strong personality, and Jung-in gradually opened her heart to him. Both of them enjoyed the sweetness brought by love, but the summer was about to pass unknowingly, and the activity was about to end...