Peggy Martin, the daughter of a rich American businessman, persuades him to purchase a Scottish castle from Donald Glourie, dismantle it and move it to Florida. Along with the castle goes its ghost.
Murdoch Glourie haunts the castle after dying a coward's death in the 18th century. To find rest, he must get a descendant of the enemy Clan MacClaggan to admit that one Glourie is worth fifty MacClaggans.