Genius surgeon Yan Cong accidentally entered a military marriage novel and became the substitute for "White Moonlight" who was sent to the military prison by her husband. After being bound to the "Replacement Life System", he must use his medical skills and system abilities to save himself within three months and expose the marriage conspiracy between the original owner's sister and the military commander. Faced with the strict hierarchy and ubiquitous hostility of the military region, Yan Cong rose from despair, collected evidence step by step, reversed the situation, and eventually not only cleared his grievances, but also became a legend in the military region. However, when the revenge is completed, the truth behind the system makes him face a more difficult choice - whether to stay in the book world and enjoy the glory, or to return to the real world and face the unknown.
