The story begins on a misty morning in a water town in Jiangnan. As her parents bid her farewell with warmth and reluctance, Lin Weiyang boards the high-speed train bound for Xingcheng, the city where her university is located. Watching the familiar scenery rush past outside the carriage, she feels both anticipation for the future and a faint sadness at leaving home.
Lin Weiyang arrives in the bustling city of Xingcheng and moves into her dorm with the enthusiastic guidance of her upperclassmen. There she meets Su Xiao, a lively and outgoing roommate. Like a little sun, Su Xiao quickly dispels Lin Weiyang's unfamiliarity and unease. The two tidy their room and explore campus together, beginning a warm friendship. In conversation, Lin Weiyang hears others mention the name "Lu Beichen" for the first time.
