In 1999, Tokyo is reshaped by the Babylon Project, centering on the Ark—a colossal, wind-stressed nerve center of a vast redevelopment that aims to redefine the city’s coastlines and skyline. As the subways and suburbs vanish to make way for new human-made islands, a troubling pattern emerges: several Labors, created by Shinohara Heavy Industries, suddenly awaken and spiral into unpredictable, dangerous activity—even when unpiloted. The Tokyo Metropolitan Police Department’s SV2 unit is called in to neutralize the threat, with Division II taking the field while Division I trains elsewhere.
The mission teams up a few key players. Captain Gotoh leads the charge, alongside Sgt. Asuma Shinohara Toshio Furukawa (voice) and mechanic Shigeo Shiba Shigeru Chiba (voice). They work with Detective Matsui Tomomichi Nishimura (voice) to unravel the mystery behind the erratic Labors and the bigger scheme at play. Their early findings point to a shared vulnerability: all the malfunctioning units are equipped with a new Hyper Operating System, or HOS, a chilling piece of software that promises enhanced performance but carries a dangerous flaw.
What triggers the crisis is as much environmental as it is technical. Low-frequency resonance, amplified by the Ark’s immense steel frame and wind-lashed high-rises, pushes these machines toward rampage. A typhoon is forecast to sweep Tokyo within days, making the stakes even higher. The team learns that the HOS was tied to a programmer named Eiichi Hoba, whose fixation with the Babylon Project—an allusion to Biblical arcs—contributed to a self-replicating virus buried in the code. The computer models warn that a powerful windstorm could synchronize the Labors’ resonance across the city, turning them into a citywide threat just as the weather worsens.
Amid the escalating danger, Gotoh secures clearance to strike the Ark itself, a move that is controversial but deemed necessary. Kanuka Clancy Yō Inoue returns from the United States to assist in the raid, bringing experience and urgency to the operation. Division II equips their vehicles with flotation bags and heads out to the Ark, where the Battle begins in earnest. The encounter pits malfunctional Labors against Ingram and Noa Izumi Mina Tominaga (the SV2 pilot) alongside Ohta Michihiro Ikemizu and Kanuka in a hijacked AV-X0 TYPE-0 police Labor prototype.
The battle is chaotic and tense. On the Ark, Ingram, Noa, Ohta, and Kanuka clash with rogue units while others scramble to reach the control room and trigger a self-destruct sequence meant to stop the threat for good. Yet the plan hits a snag when Kanuka’s control over the TYPE-0 falters—an effect of the HOS interference. In the perilous moment, Noa bravely exits her damaged unit and uses a shotgun to strike at the Labors’ S-RAM systems, finally shutting them down and collapsing the threat.
With the Ark neutralized, SV2 mobilizes rescue helicopters for a swift extraction of the team. The city breathes a sigh of relief as the immediate danger subsides, but the memory of the event lingers—the fragile balance between cutting-edge technology and natural elements, and the costly pursuit of progress at a massive urban scale. The operation leaves Tokyo with a stark reminder: when engineering and weather collide, a city’s future hinges on the courage and coordination of those who stand in the line of fire.
