Project Babylon represents a sweeping overhaul of Tokyo's districts, featuring the construction of man‑made islands across the bay. By deploying "Labors," autonomous machines built solely for labor, designers and builders accelerate progress of the renewal. When a pivotal architect behind the scheme is discovered dead after a suicide that raises questions, Captain Kiichi Gotou's Patlabor squad is charged with unraveling the odd case. As multiple Labors malfunction and a corrupted AI threatens Tokyo"s citizens, rookie flyer Noa Izumi and her Patlabor Alphonse follow Gotou's directives to shield the metropolis—and the nation—from a colossal, apocalyptic plot. The investigation reveals hidden motives, corporate greed, and an ancient prophecy that could alter the city"s destiny forever in the heart of bustling streets today.