A pig with a helmet has a hammer. A pig with a nail comes to the helmet pig and asks to build a house. He takes the nail and builds the house. He finishes and goes to the pig. The pig says that the house needs to be bigger, so the pig agrees and makes the house bigger. The helmet pig finishes but the pig says it needs to be even bigger. The helmet pig builds and finishes it revealing a big castle silhouette. He asks the pig if it's already snough but he says no. Out of rage, the helmet pig drops his hammer and goes to the second highest room in the castle and stomps on it. The nail he used falls to the pig and the structure collapsed. He asks help from another pig and so ends the episode.
When you hear the building, you can hear a quarter sound of the TARDIS opening.
On the 'Beta' version of this episode,the pig had a coin instead of a nail.