Sabrina time-travels to ancient times, becomes a wealthy merchant and helps Harrison become duke. When he takes a scheming concubine, she passes her assets and modern ideals to granddaughter Harriet and returns to modern life. Now 18 again with a loving family and fiancé, she watches as the duke's mansion falls into chaos. Using Sabrina's teachings, Harriet takes revenge and collapses the mansion. After the duke regrets his choices, Harriet follows Sabrina to the present where they start anew as sisters.