Chester Royde, an American millionaire, travels to Scotland with his new bride Carrie and sister Myrtle, to find out more about Carrie's Scottish ancestry.Their new 'relatives' turn out to be a little more authentically Scottish than they bargained for.Ben Nevis, Laird of Glenbogle Castle, is fiercely protective of his lands and the Macdonald clan spirit, but being cash-strapped he's not above attempts to marry heiress Myrtle to one of his many brawny sons.But then a group of hikers stumble onto his moor and spoil a day's hunting, sparking all-out war between gentry and commoners.