In a bid to regain its superpower status, Russia enters a scheme with Iran and North Korea to control the world's oil reserves, weaken the West, and bring the world to the precipice of nuclear destruction. Standing in their way is the USS Seawolf, her Captain, and his newest crewmember, Lieutenant Kristen Whitaker. As a naval Academy graduate, brilliant engineer and gifted athlete, Kristen is the quintessential right person in the right place at the right time to prevent catastrophe. But as the first woman ever to serve on an American submarine, she faces unyielding convention and deep-seated prejudice from her fellow officers and crew. With time running out, she must come to terms with a haunted past and carve out her place among the crew before they lose their chance to avert World War III.

Once more, Kristen Whitaker and the crew of the Seawolf are thrust center stage as the Russian Federation's plan to gain control over the world's oil supply unfolds. Kristen must come to grips with the demons in her past as she struggles with both personal and professional challenges. With the stakes higher than ever, the Seawolf and her crew find themselves fighting for survival in an undeclared war beneath the waves.