Charles Edward Stuart, bookish son of a space captain, is off for a tour of Talyina in the charge of his Hoka tutor, currently being stuffy Oxford don Bertram Cecil Featherstone Smyth-Cholmondoley. It looks set to be a straightforward week, until they discover Talyina is ruled by a tyrant, and the Hoka takes it into his head that his young charge is the Prince of the Prophecy, and takes on the persona of Hector MacGregor, sworn man of Bonnie Prince Charlie. Charlie finds himself swept along by events, and maybe helping an even worse tyrant than the one being overthrown.
This is fairly standard coming of age fare, enlivened mainly by the way Charlie manages to perform the Five Feats of the prophecy, and the chapter titles.
Three stories about the Hokas, a teddy-bear-like alien race that live out extreme fantasy lives. The authors keep explaining that the Hokas aren't mad, but I'm afraid I don't believe them.