The family Gyldenkål is actually called Iversen, but have changed their name, after numerous problems with the IRS, loan sharks and employers. Using clever scams, the family builds up a reputation as a wealthy and respectable part of society.
During World War I, a German U-boat sinks a British ship and takes the survivors on board. After it takes a wrong turn, the submarine takes them to the unknown land of Caprona, where they find dinosaurs and neanderthals.
Monty Python and the Holy Grail loosely follows the legend of King Arthur. Arthur along with his squire, Patsy, recruits his Knights of the Round Table, including Sir Bedevere the Wise, Sir Lancelot the Brave, Sir Robin the Not-Quite-So-Brave-As-Sir-Lancelot and Sir Galahad the Pure.