The Jackson family has moved into an old house on Commissioners Road near London, Ontario, and twins Sam and Eadie discover an exciting legend that involves their new home. Their neighbour, Ben, tells them that a skirmish in the War of 1812 took place right in front of their house, and that, during the fight, it is thought that an army paymaster lost a chest of gold that has never been recovered.
Sam, Eadie, and Ben decide to solve the legend and find the lost gold. But almost two hundred years have passed. How will they know where to look? What clues are there to follow? With the help of the Internet, Dave at the library, and some clever sleuthing with maps and a metal detector, they make some progress. But why are all the most likely places to find the gold off-limits?