Eternal War continues the stories of Damien, Sabine, Mat, and Adrian as they separate to return to their home nations and return to their status of enemies. But given the events they have experienced, can they ever truly consider each other enemies again?

As Sabine moves away from the others and becomes obsessed with reestablishing her own nation, Damien becomes isolated in Lohen and faces increasing difficulties in his home nation. Only Mat and Adrian seem to be able to straddle the line between friend and enemy as they struggle to keep Sabine and Damien from drifting too far into chaos. But will they be able to keep Damien and Sabine from worsening the Second Galactic War?