As Shredder lures Splinter into he Technodrome, this time with the promise that a weapon in his possession can restore the sensei to human form, the Turtles confront a giant-sized Krang, now in a new body, in the heart of New York City.
Danny and his family are chosen to make a promo to boost ratings at the TV station.
Ioki faces being dismissed from the force when internal affairs discovers that he is a Vietnamese refuge who is using an alias. Flashback sequences show his escape from Saigon.
Christopher and Bobby are worried about his adoption but each of them for very different reasons. Ray punishes Charlie's boyfriend. Cliff's natural gas operation ends up hitting a snag. Sue Ellen attempts to make J.R. jealous.
Rick gets a telephone call from a girl who is inspired by his book and does some detective work herself, only to be arrested. Her eagerness equals trouble to have around, but it turns out she's right, and the Simons wish they'd taken her hunch more serious a lot earlier.
Shredder experiments with the Inter-Dimensional Portal, hoping to contact Krangs' Rock Soldiers and prepare an invasion of Earth, but a group of fun-loving aliens called the Neutrionos, renegades in Krang's dimension, take advantage of the Portal's opening and use it to arrive on Earth.
A blizzard traps everyone inside the courthouse and cancels holiday plans, including a visit from Bull's mother, the skipper of a garbage scow.
Two sappers make their way into Firebase Ladybird without being detected, but Percell sees the third one, killing him. The other two manage to set off their explosives before they can be stopped. The next morning, Capt. Wallace orders Anderson and Goldman to have their men police up the dead bodies.. Anderson complains his men are beat, but Wallace isn't concerned. Percell is upset both over a friend's dying and having received a ""Dear John"" letter. Goldman, meantime, runs into an old friend: Lt. Nikki Raines, and promises to meet her later. Goldman, Anderson and the squad go out to destroy a bridge, which they blow up. Percell, in the midst of chasing a running VC, accidentally kills an 8-year-old. Percell is devistated over the incident.
Christmas Eve is depressing at Cheers as Sam rushes to find Rebecca a gift, Rebecca makes everyone work late, and Norm's Santa Claus buddies gather to celebrate the end of the season.
Vaudeville is shown to Rudy and her friends, who are unimpressed.
Trunk must solve the puzzle of why the army has surrounded the entire precinct before the entire staff dies.
Whitley's secret Santa surprises her with a visit from her newly separated daddy, who walks in with his youthful girlfriend.
While plans are in full swing for the Keaton's 20th anniversary party, Steven and Elyse are fighting and it looks like they may not make it that far. Elyse wants to have a big party to celebrate the Keaton's 20th anniversary and Steven reluctantly agrees. Steven's enthusiasm for the affair diminishes even further as Elyse's guest list expands and the domestic problems begin to stack up, the happy couple are at each other's throats... until the kids decide they'd better do something if they want their parents to stay together.
The rise and fall of Magnus Pym and his career through intelligence. From chance meetings with people will be important to him in the future to a life in Czechoslovakia, Pym weaves his way through the complicated world of espionage.
McCall asks Harley to help him handle a request for help from a six-year-old AIDS victim who is living with his grandmother and facing increasingly violent harassment from the frightened and angry neighbors.
Baxter Stockman, a mad scientist, is showing an exterminator his new invention: a rat catching robot called Mousers.
Mr. Hayes visits Dave after his return to the agency to subtly hint that he should take some responsibility for Maddie's unborn child.