Jiang Zhiyue, an unemployed young woman who returns to her hometown after a string of disappointments, unexpectedly discovers a miniature ancient city beneath the bed in her family's old house. The instant noodles, ice cubes, and chili water she casually sends into this tiny kingdom are all regarded as divine miracles, and Pei Zhi, the general defending the city, worships her as a goddess. Using everyday objects in ingenious ways, she helps defend the city and improve the people's livelihood, while Pei Zhi repays her with traditional medicinal herbs and rare delicacies from the deep sea. A pair of matching safety pendants connects two different eras, bringing healing to both a woman and an entire city.