The time was 1585 and in the warm waters of the Mediterranean and the Bay of Biscay, Spain was gathering ships to crush the growing sea power of England. Under a clever plan of Philip II, Spain had been treacherously impounding English merchant ships in Spanish harbors, seizing their cargoes, imprisoning their crews, and hoisting the red and yellow ensign of Castile and Aragon on their masts. One ship - the Primrose - escaped and returned to England to tell the shocking story. Henry Wyatt, Master's Mate of the Primrose, had joined his fellows in fighting off and finally outwitting the treacherous Spaniards in Bilbao Harbor. The ship returned to London with its cargo spoiled, but bearing a document proving the Spanish king's duplicity. How Henry Wyatt was back in England - to claim his sweetheart, Kate, and to stand on the threshold of one of the most thrilling adventures in all the history of the sea: the crusade of the Golden Admiral - Sir Francis Drake - against Spain.