Let's outline the characters. Maybe a protagonist who was involved in the first story. Let's name them, say, Alex Voss. Maybe they were part of the rebels. In the prequel, they defeated the corporate villain, but now a new threat emerges. Perhaps the injectors started to cause unintended side effects, or a new entity wants to exploit them.
Hmm. Let me consider different angles. If "Injector Standoff" was the first story, the second one should continue from where it left off. Maybe the first story was about a conflict over a technology called Injectors, perhaps a tool or weapon. The standoff could be a tense confrontation between opposing groups. injector standoff 2
Genre: Sci-Fi Thriller