From publisher blurb:
The Computer runs Alpha Complex perfectly, of course. If it should occasionally wall off a contaminated corridor, or block access to a few dozen mutant-haunted subsectors—well, picky picky. Bureaucrats erase those areas from the maps, and no one ever thinks about them again—no one but the thieves, refugees, unpersons and mutant atrocities of the Underplex.
In these dark, sprawling tunnel networks, traitorous secret societies hide their most dangerous evidence. Intrepid ‘urban infiltrators’ defend it to the death. Good thing the Troubleshooters have the new equipment, specialties and contacts introduced in this 48-page sourcebook, and a campaign kickoff mission to test their mettle (or whatever Troubleshooters have that passes for mettle).
The Underplex—it all comes down to this!