Song Tiantian is a patient with congenital myocarditis and a female writer who has remained unknown despite spending five years in the online fiction world. During a follow-up examination, she reunites with Wu Zifan, the boy she had secretly loved for three years in high school. By then, Wu Zifan is a cardiology specialist and a colleague of Yuan Yun, Song Tiantian's college roommate. When they meet again, Song Tiantian becomes Wu Zifan's patient, setting off a series of events that eventually bring them together.
