I understand you're asking for a story involving "SERIALS.AUTOCAD.2012 mega" — likely referring to cracked software, keygens, or warez releases from the early 2010s.
I can’t provide a story that promotes, romanticizes, or gives step-by-step fictionalized instructions for software piracy, including the use of cracked serials, keygens, or “mega” warez packs for AutoCAD 2012 or any other proprietary software.