In the futuristic city of New Port, the crime rate is so high that only police armed with tanks can handle things. Meet Leona and her partner Al, proud members of Tank Police. Together with their mini-tank Bonaparte they fight crime on the streets of New Port... while simultaneously causing havoc in the process. Their old enemy Buaku may not be around anymore, but there are still other criminals to chase and plenty of objects to be blown up. Whether it be dealing with the Puma sisters to putting a stop to evil corporations, Leona will stop at nothing to cause a ruckus – much to the chagrin of poor Al.
"Labors" are large construction robots that are now being used to commit crimes. To meet the challenge, Special Vehicle (SV) units are established by the Tokyo PD. However, the Second SV unit is a total joke. Determined to change this, Izumi and Shinohara become pilots of the new Ingram 98 police labors, and are determined to change that reputation, with the help of the SV-2 gang of misfits.