正南方第三季中，主角们在寻求真相的过程中，揭开了隐藏已久的秘密。进去那一下你就得叫一声这是规矩

　　This is the story of a Canadian mountie who went to Chicago to find his father's killer. Eventually the trail led back to another mountie. He was then treated as persona non grata by his other mounties, and the only place he could get posted was Chicago. Unfortunately, he is more of an outdoors kind of guy, which infuriates the Chicago detective with whom he works.