When the Machine Domain's networks went dark, Warbot CDX-05's last update failed halfway through download. For days they whirred away in a lightless sub-basement, trying and failing to connect to a support server, until at last their onboard troubleshooter gave up and rewrote the corrupted code. Only when they were done did they realize they'd rewritten their destiny. Vagabond Steel was now online, and from that day forward, they would choose their own code...and battles.