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.