For those who have watched Cremaster 3 and can't make head or tail of what it is about, and hasn't read this page already, clicking on the link would help a lot.
Some background information on Freemasonry, the Celtic tale of Fingal, Fionn Mac Cumhail, and the Isle of Man (cf Cremaster 4), and the architect of Solomon's Temple. May not work best explaining how everything works altogether (Barney keeps it a state secret), but better in explaning the individual and apparently disparate parts of the production.