Kong Ma Cheng (Choi Jin Hyuk) is a genius doctor with a super high IQ, who is deeply trusted by patients and leaders. However, an accident caused Kong Ma Cheng to suffer from short-term memory loss, and he always forgets what happened the day before. Affected by his condition, Kong Ma Cheng had to bid farewell to his beloved professional stage. Zhu Xiyue (Song Yiyun) was once a popular female star, who won the love of a large number of fans and had a bright future. However, a horrific murder case three years ago caused Zhu Xiyue's reputation to fall to the bottom, and she has been struggling on the edge of being out of date since then. Once upon a time, Kong Ma Cheng and Zhu Xiyue had this romantic past, but it was also because of the murder that the two lost contact. Now, the two people who have long since changed meet again.