Cousins Sam and Nancy De Bruin are new kids at Timespan High School, and are about to learn they have more than schoolwork to worry about when they discover they own a magic coin that allows them to travel back in time. Join Sam and Nancy when they are sent back to seventeenth-century Holland to find the secret of two magic jewels that have a mysterious tie to their families. Danger lurks at every corner, and the cousins have to keep their wits...