Owen Salcedo expected to spend his life maintaining the machinery that keeps Apex running. Then Management selects him for the bunker’s year-long Outrider trials. Most of the cadets have trained for this for years. Owen hasn’t. His best friend, Beckett, begins near the top of the class while Owen has to prove he belongs there at all. Owen grew up in Maintenance, learning to diagnose failing systems, make do with the wrong parts, and keep broken equipment running long after someone else would have replaced it. Those skills start carrying him farther through the trials than anyone expected. Then strange messages begin appearing where no one else can see them. As Owen’s standing rises, Apex’s own records classify him as Historical Model 0. The cadets give him a simpler name.
Cadet Zero.
It begins as an insult. The name sticks. Its meaning doesn't.