Seventeen-year-old Yang Tao doesn't understand what love is. She asked her mother, who replied that love is a shame. She had a glimpse of her mother's pain when her marriage broke up, and she also witnessed the loss of heart of the lovelorn young man Zhao Xiaosong. She has seen the madness of Yu Jiajia, who is unable to fall in love, and has also witnessed the wishful thinking of her best friend Chen Yating. Yang Tao thought, why is it different from what is said in the book? Until she met Ding Yan. The first time they met, she argued with him over wine, and the night concealed the smile in his eyes. The second time they met, he stood in the rain all day long, his eyes dark, which made her panic for a moment. Just when she met someone in her good years, she thought he was indulgent and sensual, and that he was bothered by debts due to worldly affairs. But the real him has an unforgettable past, long-lasting love and determination. From drawing a clear boundary to being in love with each other, at which glance or moment did you decide to fall in love?