Su Yubei, a top modern forensic doctor, time-traveled to 1978 in an accident and became Su Yubei, a love brain cannon fodder in the military art troupe who was accused of having "bad style" and was pushed into a pond and forced to die.
Relying on the calm and rational instinct of a forensic doctor, she escaped from death, tore through the villain's lies on the spot, and determined to clear the grievances of the original owner and take revenge forcefully.
In order to prove her innocence, she wrote down an application for a physical examination, but unexpectedly attracted the attention of the cold-faced and iron-blooded reconnaissance battalion commander Gu Yanshen. Gu Yanshen was burdened with an old grievance from the battlefield and was also framed. He saw through Su Yubei's uniqueness and knew that she was in danger, so he proposed an alliance to her in the form of a "marriage where each takes what he needs". He protected her, and she used her forensic skills to assist in investigating various cases.
