Something has developed the ultimate rotten cheese machine and the smellier the cheese, the better! Something hates the smell and asks Something to stop his inventing and get rid of the cheese. Something has a better idea though; to build an extension to the house so that he can invent what he likes and create as much of a stink as he wants. Something wastes no time in enlisting the help of friends and they all start digging into the hill, ignoring SE’s blueprint designs. But with no proper foundations, how will the extension stay up and the house not fall down? Disaster is imminent - will Something and SE still have somewhere to live after this building adventure?