Young and feisty Margaret Harwood has been sent to Scotland on a business assignment for her wine merchant father. While taking inventory in the cellar of an old Scottish estate, Margaret finds an almost priceless bottle of wine that was bottled in 1811 during the appearance of the Great Comet. When Margaret tells her father of the discovery, he sends his somewhat unprofessional assistant, Oliver Plexico (Timothy Daly) to be her bodyguard for the rest of the trip. While the two butt heads at first, they realize that they must work together to keep their precious treasure safe from the greedy hands of others.