When you become an adult, simply saying "I love you" isn't enough to move forward. Once the gears of the heart fall out of sync, you might face an irreversible separation. This omnibus drama features two poignant stories, "open door" and "rules," depicting such heartbreaking romances. Even if we can no longer stay by each other's side, I'll remember the days we spent together and give you a final kiss from the bottom of my heart. Deep emotions and dramatic developments strike straight to the soul.