Ob Limina is a storyline from the M3 world.
The corporation Mercer-Blackwell hosts all of the VR systems in Night Owl City. Between all the different realities are the back-alley ghost connections of the system framework, and the classified data vaults rented out to the wealthy. A small team of security guards are responsible for data protection, deposits, withdrawals, and making sure things run smoothly. It’s crucial to make sure hackers don’t get into the realities, and, of course, that nothing comes out.