If there's a category for sci-fi vegan satire, I suppose this would be the classic. I went into this completely unaware of what this was about, and still wasn't quite sure after having read probably one third of the book. Faber, who wrote The Crimson Petal and the White, which is a fantastic, and very sexual, Victorian tale, does things quite differently here. The protagonist, Isserley, is, in the beginning, very detached from anyone she encounters. The writing is done in a very dispassionate manner. On a side note, I did see the film version of this book not too long ago; I didn't have too much faith in it going in, but it was actually a good film. While the very basic story outline is the same, the details and the progression of the story are radically changed. Given that the film is heavy on visuals, and sound, it worked on its own rather than trying to recreate the novel.
So, we have Isserley, a young woman who drives her car along the highways in remote Scotland searching for hitchhikers. Isserley, though not particularly attractive, has large breasts (this is important!!). We soon learn that she subdues the hitchhikers, after finding out if they are suitable for her mysterious purpose.
That purpose is to feed the starving population on her home planet. Isserley is an alien, who through surgery, has been made to look like a human female. Unused to walking on two legs, she is in constant pain, but she takes pride in her work. The humans she captures are essentially treated like livestock - tongues cut out, castrated, fattened up and then slaughtered for food sent back home. Initially Isserley regards humans, as well, sub-humans, as they are just a source of food. However, she becomes gradually more sympathetic to them, and is horrified when she discovers all that actually happens to them.
She also begins to realize her lowly status among her own. Condemned to appearing as a freak, toiling in gruesome work for the benefit of the upper class far away, who have destroyed the ecological balance on their own planet. Faber goes after a lot of things here; sexism, corporate greed, consumerism and a host of others along the way.