Harriet settles into a new life in Grass Valley, California, and gets caught up in another adventure when she decides to lease a gold mine. After listening to the pleas of a desperate teen whose daddy needs money right away---and happens to have a gold mine to lease---Harriet falls hook, line, and sinker into the venture. Although she is nervous about her investment, Harriet chooses to keep it a secret from her son, Henry, and his wife who have just learned they are expecting a baby. And besides, this just may be the ticket to a golden windfall.
But when Harriet's friend Martha comes for a visit, she convinces Harriet to come clean because she is suspicious and just doesn't buy that the operation is legit. Harriet may never see an ounce of gold, but it is the fate of the young teen that really begins to matter. And it takes an emergency with her daughter-in-law, Prudence, for Harriet to learn where her true treasure lies.