A World War II destroyer is thrust into an alternate reality teeming with dinosaurs and warring species, forcing its crew to decide the fate of a primitive conflict. Lieutenant Commander Matthew Patrick Reddy and his crew aboard the USS Walker, a Great War-era destroyer, find themselves unexpectedly transported to an alien world after seeking refuge in a squall. This new reality is populated by monstrous fish, grazing dinosaurs, and two advanced, warring species. The Walker, with its modern weaponry and steam power, represents a significant technological advantage that could irrevocably alter the balance of power in the ongoing conflict, presenting Reddy and his crew with the immense responsibility of choosing a side and potentially triggering an Armageddon.

The premise of a modern warship thrust into a prehistoric, alien world sets up a compelling conflict between advanced technology and a primitive, yet dangerous, environment. The narrative likely focuses on the crew's struggle for survival, their adaptation to the new reality, and the moral quandaries of interfering in an established war. The genre suggests a blend of military action, science fiction, and adventure, with an emphasis on strategic decision-making and the consequences of wielding superior power.