Herb Moss is a nice young man. He's a Vegan: a member of a genetically engineered species, part human and part plant, living on the planet New World. It's a good life, really: Herb's engaged to be married to his childhood sweetheart Lily; has a job with his father's firm; and can look forward to a solid if unexciting future. And as everyone keeps telling him, it's time to put down roots. If he happens to be bored every time he thinks about it - well, that's a normal part of growing up, isn't it?