Chris and Sam rush to the place where a boy had just disappeared and discover interesting artifacts. One is a map of Upper Canada (present-day Ontario). The other is a compass on which is inscribed ""To Tecumseh/From Brock."" When Chris and Sam point the compass north, the strange noises emerge again. Together they are transported to Fort George, a Canadian fort during the War of 1812, in the headquarters of Sir Isaac Brock.
