A Russian military spy sub lies marooned in American waters near the U.S.-Canadian border. Yuri Kirov, a seasoned security officer, is in charge of the crew's safety--and the operation's success. His only hope is to make a death-defying underwater escape, reach shore undetected, and convince a total stranger that the fate of the world depends on helping him. For software engineer Laura Newman, it's not an easy choice. But with two Russian spies tailing them, and tensions escalating between superpowers, one wrong move could trigger unthinkable devastation.