Forensic doctor Yan Luo Mintian in 2023 accidentally traveled to 1985. When she opened her eyes, she became the second girl of the Yan family who was forced to marry her sister in Hongqi Village. On her wedding night, she faced retired scout Murong Xuan - a tough guy with cold eyebrows and straight shoulders. In order to find out the truth about the original owner's drowning and her own life experience, she signed a one-year fake marriage agreement with Murong Xuan, but she gradually fell in love with them.
She relies on modern forensic knowledge to identify the real culprit of chicken theft from the paw prints next to the chicken coop, and uses scalpel details to overturn the villagers' false accusations. When she first shows her talent, he is always silently guarding her behind her. When she discovered the truth that her adopted sister had replaced her as a wealthy daughter and her biological parents were framed and imprisoned, he became her strongest support, accompanying her to the labor camp and tracking down the culprit.
From the fake marriage agreement to investigating cases side by side, from the forensic star of the criminal investigation team to the core backbone of the anti-trafficking team, she cuts through the fog with a scalpel, and he protects justice with his police badge. Her cheeks burned when he said "I will protect you", and his eyes gleamed when he told her the truth. When the adoptive mother's conspiracy, the sister's jealousy, and the criminal's counterattack were shattered one by one, the fate that began as a substitute marriage ended up being together across time and space. The tough guy's pursuit of favor and the sassy wife's blushing are intertwined. In the style of the 1980s, a legend of "forensic doctor and police officer" is written - it turns out that the best love is when he understands her edge and she loves his responsibility.