Thrown back through the centuries to a war-torn Britain and America, Bass Foster and his fellow castaways control kings and countries by wielding weapons from a highly advanced future civilization. But the unsuspecting time travelers have attracted the attention of mysterious, awesomely powerful beings who might bring the world tremendous benefit - or destroy it with terrifying force. Bass steels himself for yet another battle on Irish soil while his American friends fight Spanish invaders to save native Indians. But hidden enemies are already tracking their every move, scheming unspeakable dangers to lay in their path....