Of Sterility and Feelings

What would happen in a world where people don't feel anger, hate and bitterness? Hermione Granger have always wondered what that world would be like. But she did not account for her feelings to pass on to a young and impressionable Teddy Lupin. It created a Utopia where there is no war, famine or illness. Someone was sent back in time to stop this ideal world from coming to pass.