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?
The date is 2002, three years after the events of PATLABOR 1-Mobile Police. The destruction of a United Nations Labor team in South East Asia begins the build-up to a deadly terrorist plan that threatens to send shockwaves throughout Japan's military. With evidence of an impending military takeover, the scattered members of the original SVD (Special Vehicle Division) must gather to defend the city against danger. To make matters worse, the mastermind behind the operation is none other than Nagumo's former teacher and ex-lover Tsuge. Can Nagumo stay true to her oath to uphold the law in the face of Tsuge's destructive plan for revenge? The countdown to armed revolution and panic on the streets of Tokyo begins now…