Jiah and Heeseung were high school sweethearts. They grew up in the same small town, spending every moment together, dreaming of a future. But when Heeseung graduates the realisation starts to settle in. Heeseung is bound to his family business and has to leave soon, while Jiah feels she has to seize this rare opportunity. Their last night together is bittersweet-Jiah promises they'll return to eachother, and Heeseung promises he'll wait, or so he told her.