Beneath the cherry blossoms at the medical school, Jiang Kexin recalls her childhood promise with Jiang Qingnan as she stays up late studying for exams. Forced to take over the family business, Jiang Qingnan confides in her about his uncertainty and receives her heartfelt encouragement.
Meanwhile, Bai Huahan approaches Jiang Qingnan with hostility. After winning a hackathon, IT genius Liao Yongyan reveals a gentle side when Jiang Kexin discovers that he secretly tutors the children who took part.
The gears of fate begin to turn for these four young people.
