The events on Takalu have irrevocably transformed the Terran Republic. The integration of the Eranian Union into the Republic, a civilization that stands as an equal to her in every conceivable respect, serves as a testament to this transformation. However, with significant blessings often come profound challenges.

The Zalu superweapon was uncovered through the diligent efforts of the Calyster and her crew. When this weapon is deployed against the Republic, the crew is promptly recalled to active duty as the Republic finds itself engaged in conflict with the Zalu Empire. Now retrofitted with the finest equipment available, the Calyster embarks on a covert mission that may prove to be as consequential and significant as the one that brought her to Takalu.