Mo Xiaodou, a military supplies practitioner from the apocalypse, accidentally travels through time to the war-torn Chongning Dynasty, becoming a female shadow guard of the Eastern Palace. Amidst military defeat and the fall of the territory, she relies on her robust physique forged in the apocalypse, battlefield rescue experience, and reserved supplies to save Crown Prince Rong Tang from the chaotic army. Situated in a crisis-ridden military camp and imperial court, Mo Xiaodou single-mindedly protects her family and relatives, refusing to attach herself to or pander to the powerful. Maneuvering between enemy forces and court intrigue, she rescues the wounded, resolves crises, struggles for survival in the smoke of troubled times, protects the local people, and carves out a path of her own.