The protagonist Cheng Yuwei, a contemporary doctor in chemistry, unexpectedly finds herself in the Republic of China period due to an experiment gone awry. There, she encounters Ling Xiaotian, a formidable warlord with significant military influence. Initially, the two clash due to their contrasting beliefs and temperaments, but as they spend time together, they begin to appreciate each other's strengths and evolve amidst the chaos of war. Utilizing her modern knowledge of chemistry, Cheng Yuwei becomes an essential strategist for Ling Xiaotian, assisting him in achieving numerous victories.