Four books in and we finally have an idea of the exact nature of the existential threat facing humanity. So there are these bipedal creatures which are symbiotes. There are two different creatures, which have evolved in entirely different environments which are fused together and operate as a single entity.
These symbiotes are of two different camps. The common populace and the military. The military wants to form new symbiotes with humans instead. There is also another race which created the symbiotes in the first place… who the military are running scared from.
Yeah, this is where I give up. Despite the awful writing and tedious dialogues, contrived premise and bland characters, I stuck with the story hoping it was building up to something good. It was not.