As ambassadors Olivia and Ricardo prepare to journey to Regonia with humanity's new allies, Tenna and Krona welcome them into the tribe and into their own family, giving them a sense of belonging they've never felt before. But joining the tribe and going to war at their side means approaching Daen Tribe's allies on Regonia, allies who may greet them with sharp blades to keep out the dreaded star-sickness.

Meanwhile, Rone and Reginald welcome newly-emotional Drennar into their own experiment. They just have to find a way to bring them into the rebellion without jeopardizing the secrecy that protects them, the Humans, and the Regonians.

Now, they must all find a way to maintain their sanity as the perils of war loom over them. But when the Drennar decide they need Olivia for their next experiment, will the fight be over before it begins?