After the terrible battle between the men of the destroyer USS Walker and their Lemurian allies against the savage Grik, Lieutenant Commander Matthew Reddy is shocked by the arrival of a strange ship captained by Commodore Jenks of the New Britain Imperial Navy--an island-nation populated by the descendants of British East Indiamen swept through the rift centuries before.

With the Walker undergoing much-needed repairs, Reddy knows the Grik have only been fended off, not defeated, and he will need all hands on deck to fight them off when they next attack--but Jenks' loyalties seem uncertain.

As tension between the Allies and the Imperials mount, Reddy will come to realize that his suspicions are not misplaced--and that a greater danger than the Grik is about be revealed...