Wang Tianwei, a survivor of the apocalypse, travels through space to a new world and takes the place of a love-struck girl at Qilin Military Academy, enrolling in the mecha engineering program. Instructor Chao conducts rigorous survival training on campus. Drawing on ten years of real combat experience in the apocalypse, she stands out and makes friends with Huang Yan, Jian Jingyu, and others. Wang Tianwei studies modular mecha design and creates the Ironclad series of mecha models. She forms a team to compete in inter-academy mecha competitions, winning impressive results through practical designs and seamless teamwork. Supporting one another, they continue exploring mecha technology and set their sights on the National Mecha Championship.