"Use Captain Yoon Jung-yi's brain data to create the ultimate AI combat warrior." Earth is devastated by drastic climate change, and humanity migrates to new refuges in outer space. The civil war that ensued there lasted for decades, and Yoon Jung-yi (Kim Hyun-joo) became a legendary mercenary and military strategist, invincible. But a failed mission left her in a vegetative state. The Klonoid Institute, a military AI development company, attempted to create the ultimate combat warrior by cloning her brain. 35 years later, Jingyi's daughter Yoon Seo-hyun (Kang Soo-yeon) became involved in the effort as the lead researcher on the "Jing-E" project. Despite many attempts at cloning and simulation, little progress was made, and Klonoid abandoned its research and launched another project. When Seo-hyun learned of their plan, he was determined to save the "Jing-E" project. Just like that, the AI combat warrior "Jing-E" escaped from the research laboratory...