After the murder of his father in the Yukon, Fraser, a RCMP constable, follows the killer's tracks all the way to Chicago where he meets Ray, a Chicago PD detective. Together they continue their search for the truth and justice.
Helping his neighbor Charlie stay out of danger, at the request of his young daughter, brings Benton to investigate an insurance scam that might become deadly for Charlie. In the meantime, Diefenbaker defies Ben's instructions to stay inside and ends up on the run from the city's animal control service.
Diefenbaker follows the stolen car of a young pizza delivery boy to a dealership that seems to be selling the same vehicles over and over. The only way to get proof is for Ben and Ray to go undercover as used-cars salesmen.
A gang of bank-robbing Santas are double-crossed by their own getaway driver, who plans to give the ultimate gift to his son. Meanwhile, amid lineups of countless department store Santas at the station, Fraser receives help from an unexpected source.
A vacation-bound Vecchio reluctantly accompanies Fraser, who is escorting an uncooperative witness (and compulsive liar) back to Canada to testify. Along the way, they find themselves being hunted by hit-men for the Canadian mob.
Vecchio and Fraser protect a down-on-his-luck shoemaker from someone out of Vecchio's past: a former schoolyard bully turned powerful mob boss. Meanwhile, Vecchio's sister Francesca decides to romantically pursue Fraser in earnest.
While attempting to deliver a party invitation to a prominent Chicago businessman, Fraser can't seem to steer clear of the man's obnoxious fiancée, who leads him on a merry misadventure with her jealous groom-to-be in pursuit.