Zhang Guo, a genius developer, suffers a double blow to his career and love life when his girlfriend steals his work. One rainy night, he rescues Xiao Lou, an old household robot girl who has been abandoned, and lovingly repairs and rebuilds her. They bring warmth and protection to each other as they join forces to fight back against relentless suppression by powerful capitalist forces. Relying on their outstanding technological expertise, they expose conspiracies, uphold their principles of justice, and build an entirely new technology business. After weathering countless hardships together, the robot girl awakens to genuine emotions, and the two find beautiful love in which they both wholeheartedly choose each other.