As graduation from college approaches, Lin Xiao (played by Yang Mi), Nan Xiang (played by Guo Biting) and Tang Wanru (played by Xie Yilin) are preparing for the exam, while Gu Li (played by Guo Caijie) has already completed all the credits and is waiting for the time to study abroad. At this moment when life and state of mind are facing great changes and shocks, many things are beginning to change. Lin Xiao, who has just completed his internship, and Jian Xi (played by Li Yueming) are in a dead end; Gu Li is in a cold war with Gu Yuan (played by Ke Zhendong), and the secret between her and Nan Xiang's boyfriend Xi Cheng (played by Jiang Chao) is also revealed. Tang Wanru and Wei Hai (played by Du Tianhao) are not destined to be together, and she suffers humiliation in the process of wishful thinking. The relationship between the seemingly close sisters, who seem to be as close as brothers, collapsed on the day of Gu Li's birthday party...