In winter, Zhao Muzi, a female college student who studied in the north, returned to Hangzhou to celebrate the Spring Festival. Her father had started a new family, and her half-sister had just entered the first grade of elementary school. Her mother was dating a Japanese boyfriend and loved him like a teenager. Once when she was sending her sister to school, Zhao Muzi ran into another parent. He looked like an old friend, and Zhao Muzi was in a trance for a while. The relationship that was once undefinable still exists like an illusion. It happened that her current boyfriend came to Hangzhou to visit, and suddenly, Zhao Muzi wandered in this familiar, strange, and constantly changing hometown, looking for a way to deal with herself. The new year is about to begin again, and everything seems to have never happened.