Following Jigsaw's grisly demise, Detective Mark Hoffman is commended as a hero, but Agent Strahm is suspicious, and delves into Hoffman's past. Meanwhile, another group of people are put through a series of gruesome tests.

21 Jump Street revolves around a group of young cops who would use their youthful appearance to go undercover and solve crimes involving teenagers and young adults.

Horace McNickle (Edward Asner) is a two-time felon serving prison time for counterfeiting. On the week before Christmas, he escapes from prison dressed as Santa Claus due to his uncanny resemblence to St. Nick resulting from his long white beard and heavyset features. McNickle hides out from the police in a nearby suburban neighborhood where he is befriended and helped by two local children who think he is the real Santa Claus. McNickle takes advantage of the kids naive ness to help him get his counterfeit money hidden somewhere in a local department store while he develops kind-hearted feelings for his two con victims that make him slowly understand the true nature of Christmas.

Cindy Fralic (Nancy McKeon) plans to become a Los Angeles County firefighter. However, in the 60-year history of the department, no woman has ever passed the department's physical skills test. Battling divorce, stereotypes and opposition from both men and women, Cindy Fralic passes the physical agility test to become the first female firefighter in Los Angeles County.

In Toronto, early twenty-somethings Judy Monroe and Roy Kirby are in love and are planning to get married. They understand the obstacles they are facing as husband and wife as Judy is white and Roy is black.