Wilbur the pig is scared of the end of the season, because he knows that come that time, he will end up on the dinner table. He hatches a plan with Charlotte, a spider that lives in his pen, to ensure that this will never happen.
Wilbur the pig knows how important friendship is - he learned that from a spider named Charlotte. So when Wilbur meets Cardigan, a lonely lamb, Wilbur immediately makes him his friend.