Five years have passed since I married my husband, whom I met while attending university, and we've been living a peaceful married life. Then one day, my husband came home with a man I never wanted to see again. He was our former university professor—and my ex-lover. Back then, I heard rumors he was married, so I ended our relationship myself. But that rumor turned out to be a misunderstanding. My husband doesn't know about our past. And he's unaware that I've never completely forgotten him. His sudden reappearance shakes me to the core. What does my husband truly feel? What will happen to our marriage? A new change is about to strike our once-stable life.