It's a steamy June in Toronto, 1836. Lieutenant Marc Edwards has again found himself sitting atop a lit powderkeg in more ways than one. A prominent politician has been assassinated, and in their haste to catch the killer, Marc and his troops are responsible for the death of an innocent local man. Making matters even worse, Marc may have accidentally gotten himself engaged to the wrong woman, while the right woman still won't answer his letters. In order to track down the real assassin, Edwards joins forces with Constable Cobb of the newly created Toronto police force. Cobb's methods are somewhat different from Marc's; and investigations always end up in the local tavern, where it seems everyone knows far too much about Marc's romantic entanglements.