[Trauma from her upbringing, yearning for freedom] Because of the shadow cast by her family, Yu Yixiang went abroad to study and live. She couldn't define what direction her life should take next, but she knew she wouldn't stop moving forward. Shao Yi, the unattainable love of her university years, changed her life when he appeared. They studied together and started a business together. Just as they were about to return to China, Yu Yixiang left behind a letter and disappeared. Shao Yi followed her. He knew she didn't want to be tied down, but while she yearned for freedom, he yearned for her. Shao Yi guessed at the countries and cities Yu Yixiang had mentioned. At first, all he wanted was to find her. But as he traveled through country after country, he began to understand what she meant by "solitude" and "freedom," and even started to enjoy them. They had made no promises. There had only been one thing she said long ago: "I want to go to Paris and see the snow." And then they met again...