The Excalibur Alternative

The flotilla of medieval ships were helpless in the face of the raging maelstrom in the North Sea. Sir George was certain of his death, until the aliens arrived offering rescue--in return for eternal bondage. Lying helpless during a raging storm in the North Sea, a fleet of medieval ships finds sudden rescue in the arrival of a powerful group of aliens, who offer salvation in exchange for eternal bondage fighting as star soldiers.