Set in a projected year 2000, Patlabor depicts a Tokyo undergoing massive infrastructure transformation via the "Babylon Project," an ambitious land reclamation effort designed to alleviate urban crowding and rising sea levels. The world is defined by the ubiquity of "Labors"—large piloted mecha used primarily for heavy construction and industrial work. While Earth remains the central political and economic hub, the film focuses on the friction between rapid technological advancement and the decaying, older neighborhoods of Tokyo that are being unceremoniously demolished to make way for the future.

The societal dynamic is characterized by a "high-tech, low-life" contrast where Shinohara Heavy Industries maintains a near-monopoly on Labor technology, creating a dangerous monoculture. The plot centers on a software-driven crisis: a genius programmer embeds a hidden virus within the new "Hyper Operating System" (HOS) that causes Labors to go berserk when triggered by specific low-frequency resonances from high-rise buildings. This reflects an alternate timeline where Japan's 1980s economic bubble never fully burst but instead fueled a transition into a highly automated, mecha-dependent society plagued by industrial sabotage and cyber-terrorism.

The film’s predictions regarding operating system vulnerabilities and the risks of a technological monoculture have proven remarkably prescient. While giant robots remain fictional, the film's depiction of a society paralyzed by a malicious software update mirrors contemporary concerns over global cybersecurity and supply chain attacks. Furthermore, the Babylon Project serves as a clear parallel to real-world large-scale land reclamation projects in East Asia. Analysis suggests the film serves as a critique of "scrap-and-build" urbanism, accurately anticipating the social displacement caused by aggressive metropolitan renovation in the late 20th and early 21st centuries.