The sequel picks up on Christmas Eve some years after the first movie, with Ricky Caldwell, the 18-year-old brother of the first film's killer, now being held in a mental hospital, awaiting trial for a series of murders that he committed. While being interviewed by the psychiatrist Dr. Henry Bloom, Ricky tells the story of the murders his brother Billy committed throughout a series of several flashbacks using footage from the original film. These flashbacks have new shots to make Ricky appear in more of Billy's original story.
After this, Ricky tells his own story: after Billy's death, he was adopted and given a good upbringing, but his trauma was never treated. After his foster father's death, Ricky loses his composure and commits a series of random murders, targeting people who are "naughty". A chance for a normal life seems to appear when he starts dating Jennifer Statson, but an unpleasant encounter with Jennifer's ex-boyfriend Chip sends Ricky over the edge. He kills Chip by electrocuting him with jumper cables that are attached to a car, while Jennifer watches. He then uses the antenna of the car to strangle Jennifer to death. A security guard sees this and as Ricky is about to get arrested, he grabs the guard's gun, shoots him in the forehead, and goes on a shooting spree, killing at least 3 people throughout a suburban neighborhood. He gets into a stand-off, where he tries and fails to commit suicide before getting arrested by the police.
Cutting back to the present day, Ricky kills Dr. Bloom and escapes from the mental hospital, murdering a Salvation Army Santa and stealing the man's costume. Ricky plans to kill the now disfigured, wheelchair-bound Mother Superior, whom he blames for Billy's death. After chasing Mother Superior throughout her house, Ricky succeeds in decapitating her. The police arrive and gun him down afterwards. Sister Mary wakes up, and the police officer tells her, "He's gone, Sister. It's over." Then, she turns over and sees Mother Superior's severed head, before screaming in terror. Ricky, who had been shot by the cops, suddenly opens his eyes and smiles devilishly, indicating that he had survived his gunshot wounds. The final shot shows Billy's arm dressed in a Santa suit plunging a knife into the screen, before it freezes and the credits roll.
Who is the 18-year old brother of the first film's killer ?
Ricky Caldwell