With ruthless US and Japanese investment banks circling Tuftons, a struggling two-hundred-year-old, family-run British bank, can its bumbling, incompetent chairman, Sir Charles Bunbury, fend off the onslaught and save the bank?

An alien arrives on earth with a mission: to learn to become human and find the one woman who can help save his species. Together they discover that in order to save his world, they must first save ours.