It is a joyous time for all Canadians as the royal wedding commences. But just as the Prince and Princess are about to be joined for all eternity, the princess is abducted! All Canadians are called upon to help save the princess. Ike answers the call to arms.
At the school, Mr. Mackey is preparing a production with the kindergartners on the dangers of tooth decay. However, when it is time for "Tooth Decay" to come on stage, he is nowhere to be seen - apparently the actor is at home watching the Royal Wedding on the TV. Mr. Mackey wonders who could care about the Royal Family of Canada so much.
Ike is enjoying the program - in attendance of the wedding are Terrance and Phillip, the Queef Sisters, Bryan Adams and various other Canadian celebrities. However, part way through the ceremony, the roof begins to fall in, and the princess-to-be is kidnapped in some kind of energy cube. Ike is, of course, distraught, and cannot stop crying during the next day's rehearsal. An annoyed Mr. Mackey, not realizing that Ike is genuinely devastated but just portraying Tooth Decay incorrectly, sends him home.
A news report on the wedding incident mentions that Canadians are committing suicide out of despair since they can't deal with the loss anymore. A message from the prime minister of Canada says for all Canadian citizens who didn't commit suicide are to open their "faith boxes", whatever they are. Ike seems to know straight away and heads home. He finds a dusty old box labelled "FAITH BOX" and on opening, a pre-recorded video of the Canadian prime minister is projected onto the wall. He states that, if the box has been ordered opened, one of the Royal Family must be in danger. The order is to travel to Canada, take up arms and rescue the imperiled Royal. Inside the box is everything required for the operation.
With Ike's disappearance, Mackey goes apoplectic towards Kyle in the middle of a strange type of math class - since Ike is his brother, it's his problem to deal with.
On the bus to Canada, Ike carries a shield, sword and helmet. Another Canadian, Ugly Bob, recognizes Ike to be Canadian. Since his last appearance, Bob has moved to the US where he is seen as "just another Canadian", and not the disfigured monstrosity he is seen as in Canada - he still wears a paper bag on his head though. He and Ike buddy up. At the rendezvous, the Canadians all face off with who they believe to be the culprit - Scott the Dick, who since his last appearance has turned into a giant dick due to radiation exposure (he has grown to abnormal size).
Scott correctly points out that he is probably the most patriotic Canadian there, and he has no reason to ruin the wedding - at this, the prime minister admits they got it wrong and everyone leaves aside from Ike and Bob. They team up with Scott to track down the princess' real abductor.
In order to make things up with Mackey, Kyle has stood in for Ike as Tooth Decay in the play - Mackey does not seem to realize that it is just a little kids' play, and constantly hurls abuse at everyone, in particular Kyle. He reveals that he is so passionate about it because his dad was killed by tooth decay two years before, much to everyone's surprise.
Scott believes that the abductors were the Aboriginal Canadians, primarily Inuit. They are eventually captured, and the Inuit say that they know who took the princess (with Bob translating for Scott and Ike). They take the three to a large castle, where they can see the princess through a window. They and their Inuk guide enter the castle, where the princess is chained to a wall. They realize that the culprit is actually Tooth Decay, who is exacting punishment on the princess for not flossing properly. Tooth Decay easily defeats the Inuk and Scott, but Ike manages to turn it into a statue by showing it Bob's face.
Mackey's play is stopped by the South Park police as a result of the demise of Tooth Decay, much to his relief.
As a result of their actions, Bob and Scott both receive white chocolate medals in recognition of their heroics, and Ike gets a Canadian knighthood, which Kyle finds impressive - unfortunately, Stan compares it to his sister being head of the girl scouts, Cartman compares it to his uncle being second in line to be manager at Gart Brothers, and Kenny says nothing. Kyle then agrees with them that Ike being knighted is not so amazing. The wedding finally continues as the Prince tears off the Princess' arm and inserts it into his anus, "as is tradition."
AV Club gave "Royal Pudding" a "C-" rating saying: "But as with the quickie Osama Bin Laden gags from last week, I almost wish they had waited to do an episode that addressed their Broadway experience more directly (like “Helen Keller! The Musical” did, I guess, but with the added insight that only staging a massive pain-in-the-ass show can provide). Here it felt as though the story of Mackey's play existed merely to prop up their royal wedding parody, a feeling strengthened by (speaking of Bin Laden allusions) the episode's finale, which attempted to dovetail the plots by having Ike discover that it was Tooth Decay who’d kidnapped the princess all along and vanquishing him, much to the relief of Mr. Mackey and therefore the world. Granted, it was funny in that sort of knowingly contrived way, but I can't help thinking it would have gone down a lot easier had the whole episode not felt so bric-a-brac in its construction. I’m not sure having one of the kindergarteners call attention to its overall ridiculousness (“What?”) was enough, funny as it was.
Anyway, I know there will be dissenters—loud ones, even—who found this episode wall-to-wall hilarious, think I need to “chillax” or fuck myself or chill-fuck myself or whatever, and so on and so forth. Like I said up top, this episode is bound to be divisive. But while I think I’m not squarely in either the “character and story come first” or the “LOL random” camps when it comes to what I expect from South Park, what I do know is that it’s capable of balancing both of those better than it did here. That's all."IGN gave "Royal Pudding" a "5.5" rating saying: "Despite some funny points, overall, this episode was disappointing. That's three stinkers in a row for this season, and I just don't know what to say. I really thought this season would hold up, but it seems like there are some serious problems at South Park Studios. Maybe Trey and Matt really are burnt out between trying to do this show and The Book of Mormon on Broadway simultaneously. Maybe they really were pissed about last year's censorship of "201" and are just going through the motions to fulfill their contract. Whatever the cause may be, it's clear that something is awfully wrong with this show right now. Maybe after the usual mid-season break things will be different. I certainly hope so, because right now it looks like we might be looking at the end of a comedy era."