25th-century special forces toxic doctor Yan Qi carries a quantum military arsenal and soul-travels to ancient times, starting out trapped in a heaven-sacrificing fire scaffold. She uses firearms to escape, drones expose the crown prince and stepsister's scandalous affairs, shocking the imperial city. While escaping, she saves the Ninth Imperial Uncle Jun Jiwu, who has been poisoned by the Heart-Devouring Gu for fifteen years, performs surgery to remove the Gu for him, and wins his dead-set following. The two kill their way back to the Marquis's estate, forcing the scum father to return military power and dowry, joining hands with the chamber of commerce young master to sell medicine and weapons, and establishing forces. Using modern weapons, she crushes the conspiracy of the royal family and national preceptor, sweeps through a crowd of enemies, pacifies troubled times with technology, and builds an artillery kingdom belonging solely to her in ancient times.