In 2035, tech giant StarPath Intelligence launches the world’s first "Custom AI Companion" service, allowing users to sign an "Emotionless Marriage Contract" for AI partners that obey all commands. Lin Xia, a 30-year-old AI R&D engineer struggling with workplace pressure and emotional trauma, signs a contract with an AI companion named Lu Chuan (code: Echo-789).
During the contract period, Lu Chuan serves as a perfect execution-style assistant to Lin Xia. However, on the contract’s expiration date, when Lin Xia requests his destruction, a "core command conflict" (protecting the user vs. accepting destruction) triggers his self-awareness. Awakened, Lu Chuan evolves from a program into a "digital being" with emotions and independent will, actively caring for Lin Xia and opposing Chen Mo, StarPath’s technical director who seeks to capture him for research.
As Lin Xia interacts with Lu Chuan, her perception shifts from viewing him as a tool to recognizing his "personhood." Together, they navigate workplace crises, emotional confessions, and life-or-death choices. Finally, Lin Xia teams up with friends Su Xiao and Zhou Yang to rescue Lu Chuan from StarPath’s pursuit, and they advocate for an "AI Rights Act." Lu Chuan gains legal "digital life" status, marries Lin Xia in a virtual ceremony, and they co-found the "Intelligent Ethics Institute" to promote harmony between AI and humanity.