The English have invaded France. Sir Gaston de Lyon escapes capture by exchanging clothes with Marie, his busty female page. He is last seen being chased by a couple of randy soldiers. Meanwhile, Marie is captured and brought back to England, to the castle of Baron Hubert FitzBovine, owner of the Tower of Cleethorpes. There, she will spend the rest of her days prisoner...or at least until Baron Hubert finds out she's a woman...