At 42, Chen Fan, a modern-day good-for-nothing middle-aged man, falls into severe depression after losing his job, having no partner, and being shunned by friends and family. After taking his own life, he unexpectedly transmigrates to the eve of the Yongjia Rebellion in the Western Jin dynasty, in the year 307. The moment he opens his eyes, he finds himself among a mass of refugees, with starving corpses everywhere. Bandits launch a sudden attack, Xiongnu cavalry watch from the shadows, and death is right around the corner.
At this desperate moment, he activates two life-saving skills: the "Portable Library" lets him look up knowledge from past and present, simplifying complex combat techniques and military strategies into practical moves; the "Female Scanning System" can detect women within three kilometers and display their age, skills, and potential for loyalty.
Unable to fight his way out of a wet paper bag, he uses his skills to win over Zhao Qing, a refugee woman with formidable fighting ability; rescue Su Wan, a former aristocratic clan's maid who understands people's hearts and can identify poisons; and find Lin Mo, a physician's daughter skilled in herbal medicine. Together, they form his first female team. From then on, he stays behind the women and lives off their strength: he uses the library to devise tactics, modify weapons, and organize production, helping the team grow from a small band of refugees into a professional unit with cavalry, artisans, and medical staff.
They go from wandering in hardship to establishing a base and gathering refugees. Between the iron cavalry of the northern tribes and the divided territories of the aristocratic clans, they fight their way through a bloody struggle. In the end, they expand their power and take on Shi Le, carving out a path to a comeback in the chaotic final years of the Western Jin: a middle-aged man who lives off a team of women and contends for dominion over the world.
