When Xu Yong Xin runs into her old high school classmate, Zheng Da Wei, it stirs up bittersweet memories from their school days. Yong Xin remembers a time when she was just a bookish student who kept to herself, until a chance encounter introduced her to Gao Yu Xuan, Zheng Da Wen and Zheng Da Wei. The four once-inseparable friends changed and grew apart as time went on.
