After family upheaval left her depressed and forced her to take a leave of absence from school, Lin Xiaoman finds herself in the unfamiliar Class 7 of her senior year. There, she meets the warm and straightforward Su Xiao and the cool, academically gifted Jiang Yu. From initially feeling out of place and struggling alone, she gradually breaks out of her shell with the support of close friends, overcoming academic challenges and facing her inner vulnerabilities. As she works through problems under her desk lamp late at night, perseveres in the track-and-field relay, and rides the ups and downs of practice exams, she slowly unravels the cocoon of loneliness and transforms through conversations with herself and connections with others.
