The arkansa models were never meant to be released in 1997. Their inventor, an American named Dennis Arkansa, created them to deactivate bombs. In order to increase efficiency, he programmed his robots to have a consciousness.
The German government did not approve of the arkansa models. Arkansa was jailed and died in prison. The rest of the arkansa models were destroyed: some were disabled by the government; others were found broken or rusted. However, one arkansa model out of 558 has not been accounted for.
What happened to Arkansa model 577- the robot that got away? Tales of horror circulate German countryside about a shining beast with teeth made of stone and skin made of gold; a creature whom weapons have no effect on; a creature that can understand what they say, though it is not human itself.
But who knows? After all, arkansa is dead, and this last robot has a mind of its own...