The recently-deposed Hindmost, leader of the Puppeteers, abducts the human Louis Wu and kzinti Speaker-to-Animals (who has acquired the name "Chmeee"), both of whom were part of the Ringworld exploration in the first novel.
The recently-deposed Hindmost, leader of the Puppeteers, abducts the human Louis Wu (who has become a wirehead) and kzinti Chmeee (previously known as "Speaker-to-Animals"). Both were part of the Ringworld exploration in the first novel.