The battered GammaLAW mission to Aquamarine had barely succeeded in ending the war with the world-destroying aliens, the Roke. The key to victory lay deep within Aquamarine's terrifying sentient ocean, and Commissioner Dextra Haven was determined to reveal those secrets at all costs. But she and the Exts were running out of time--the Aquamarine natives were dead-set on destroying the Oceanic, which controlled their lives with its awesome powers. And the Roke, hidden behind one of Aquamarine's moons, were preparing to strike. All talk aside, it was a do or die proposition . . .