Zack Vella is a technology-obsessed bioengineer working for Titan, a robotics and artificial intelligence facility in the vertical metropolis of Brulle. Zack is one of the first to undergo Titan's voluntary limb replacement procedure. Having both his legs enhanced, Zack becomes heavily reliant on Titan's bio-blood that fuels his cyborg legs.
Eager to break free from Titan’s monopoly on bio-blood, Zack and his co-worker, Nate, set up a rudimentary lab to make their own. Zack becomes careless, letting his bio-blood supply run low, when the power goes out across the city, and Nate goes missing.
Over several days, the city’s infrastructure is attacked, and the citizens fall into panic, blaming Titan and it’s 'borgs'. The outage reveals Brulle’s deeper reliance on power – all information is stored digitally and now rendered inaccessible.
Unable to regain access to Titan, and without the information he needs to fix the lab’s broken generator, Zack runs dangerously low on bio-blood, forcing him to hatch a desperate plan.
Accompanied by an unexpected companion, Zack wanders into the heart of all that it means to be—and to not be—human.