Lieutenant Commander Matthew Reddy along with the men and women of the U.S.S. <I>Walker</I> have chosen sides in a war not of their making. They have allied with the Lemurians-a mammalian race whose peaceful existence is under attack from the warlike reptilian Grik.<br><br><br><br>The Lemurians are vastly outnumbered and ignorant of warfare and even the guns and technology of <I>Walker</I> cannot turn the tide of battle. Luckily they are not alone. Reddy finally finds <I>Mahan</I> the other destroyer that passed through the rift. Together the two American ships will teach the Lemurians to fight and stand against the bloodthirsty Grik-or so they think.<br><br><br><br>For there is another vessel that does not belong on these strange seas-the massive Japanese battle cruiser <I>Amagi</I> the very ship that <I>Walker</I> was fleeing from when the rift took them. Like <I>Mahan</I> it followed them through. And now <I>Amagi</I> is in the hands of the Grik.