The Loud family travel to Scotland and discover they are descendants of Scottish royalty. The family quickly indulge in the most wish-fulfilling high-life ever when they discover their ancestral home is a castle.

When the rogueish but loveable Raif is asked to be his brother Tim's best man at his wedding, he decides the best present for the happy newlyweds would be to catch the entire thing on video. He returns home from abroad to find his brother is no longer the bohemian vagabond that he used to be, and is in fact marrying into a very wealthy family, and the wedding they're about to be part of will be the most outlandish and bizarre that Cheshire has ever seen... Thank the lord Raif has caught it all on tape!