Queen's brother bankrupts the treasury because he is in a pissing contest with King, as Captain (outsider/hero) romances the King's daughter, and the King's son plays the playboy as a cover.
Don’t get too attached to Kings, it’s ratings are slightly better than the test pattern, might not even show all the filmed episodes without dramatic improvement. Which is unfortunate, it’s got a lot of potential but it’s got that kind of quirkiness which is a lot easier to get away with on cable than broadcast.