Optimus approaches Galvatron to take the Omega Lock and Planet Keys. However, Galvatron is drawing out the power of the Planet Keys, and Thundercracker, Thunderblast, Ransack, and Crumplezone grow to giant size. In the midst of the battle between the Transformer forces, the Leaders of each planet face Galvatron.
After a stand-up comedian commits suicide, he's left in between worlds. Melinda tries to help him find closure.
Annabeth is assigned to try a case involving the death of a all star baseball player by an opposing player (Cole Evan Weiss). Sammy's parents seem more worried about his athletic career rather than the severity of the crime. During the investigation prior to the boy's trial, Annabeth discovers a videotape of the attack which causes her to suspect the boy's coach may have encouraged him to hit his opponent after their team lost the game. Meanwhile, Maureen's younger sister is arrested for shoplifting.
Mark worries he and Sophie are drifting apart and proposes. Elsewhere Super-Hans decides to give up drugs, and Jeremy once again gets intimate with past love Big Suze.
An arsonist sets a fire at a car dealership that kills a sales person. The name of an extremist environmental group is spray-painted on the scene, but the group denies involvement. It becomes Don's task to determine whether the group or someone else is responsible. Charlie is called in to help figure out if there is a pattern to the fires that would help provide a profile of the arsonist.
Lois thinks the new babysitter she found for Jamie is perfect... until she starts driving Lois crazy. Meanwhile, Reese starts getting picked on by the teacher when he and Malcolm are in the same class. However, Malcolm decides to defend him.
Bernie thinks that he and Wanda need some time alone. Bryana has trouble remembering her mother.
When the Kids Next Door discover a plan to ruin Christmas, they must team up with Elfa Strike to save the day.
Victor has to leave out of town and calls their old babysitter, Ms. Patterson, who got fired after they lied and said Ms. Patterson ate their mom's birthday cake. Ms. Patterson is back and wants revenge on Raven and Cory.
In this episode Jimmy Sweetman ventures out to locate a rare film print called "Le Fin Du Monde". The film once shown has been known to drive its audience into a crazed frenzy before the theatre goes up in flames. He finally discovers that the film does live up to it's reputation on the results are quite shocking.
Martin's estranged parents charming Christopher and Margaret make a surprise visit, school secretary Maureen Tracey visits the doctor with what she thinks it is a thyroid problem, PC Mark Mylow announces he's getting engaged, and when Danny Steel collapses, Dr Ellingham has to carry out emergency surgery to save his life.
It's Christmas and Julius and Rochelle find it difficult in breaking the news that they can't afford presents because of broken water heater. Chris is suprised to discover who the canned food drive is really for...
In Little Fumble, Sir Norman Fry has some explaining to do, following an incident with a glace cherry. Over in Sponge Bob Square Pants, Carol Beer is going through Sun Seekers in-house insurance policies. Vicky Pollard is displaying her woeful child-minding skills in her new career as a babysitter. Sid Pegg is up in arms about the defacing of the Larchwood Close street sign. And, in Mr. Mann's fancy dress shop, Mr. Mann is trying on a post-Mary Whitehouse Experience David Baddiel costume.
Chrismukkah has returned to the Cohen house and Seth suggests to have a Bar Mitzvah to Ryan to raise money for Johnny's knee surgery after his accident but Ryan then pulls out after seeing Johnny and Marissa get too close.
Ash and friends arrive at a Ninja School. There they meet a wild Bonsly who cries a lot and does not get along with the other Pokémon at the school. However, Team Rocket appear and decide to capture all of the Pokémon in the school, including Ash and his friends.
Danny and Stella find innovative ways to process a crime scene while Danny is trapped in a panic room with the victim, who was the only person with the security code. As a locksmith works to cut through the titanium doors, the CSIs rush to process the evidence before the victim decays further and Danny's oxygen runs out. Meanwhile, Mac, Dr. Hawkes and Lindsay investigate the murder of an exotic dancer found dead on a klieg light
While Gideon is stuck at the office on crutches, the rest of the team travels to Tennessee to track down a killer who disembowels his victims and supposedly eats their organs.
George ends up spending Christmas all by himself after he gets caught telling a lie to get out of spending the holiday with Angie's family.