The year is 1999 and Tokyo\'s Mobile Police have a new weapon in the war on crime, advanced robots called Labors are used to combat criminals who would use the new technology for illegal means. The suicide of a mysterious man on the massive Babylon Project construction site sets off a cascade of events that may signal the destruction of Tokyo. What is the connection between the suicide, the new Mobile Police AV-XO Zero Labor, and a berserk prototype tank? When Patlabor cops Noah Izuma and Azuma Shinohara investigate an unexplained wave of rogue Labors\' rampaging across of the city hanging in the balance and a typhoon poised to trigger the devastation, Noah, Azuma and their teammates must destroy the source of the virus, the giant Babylon Project tower in Tokyo Bay in a die hard battle to the finish.