The UFS Phoenix returns to Homeworld, after more than three years of searching the galaxy for a way to save humanity from the looming AI threat. Some of Fleet's captains are unhappy with their own command, following the massive casualties of Nia's first strike, and are looking to Captain Erik Debogande as the war leader they truly need, as the threat of civil war looms. But on Homeworld lurks an old threat, a secret kept by Fleet Command since Homeworld's first conquest by humans. A secret that could tear Fleet, and Erik's powerful family, apart.