Super Short Summary

In Larry Niven's science fiction novel Ringworld, Louis Gridley Wu, a 200-year-old human experiencing existential boredom, joins an alien, a Pierson’s Puppeteer named Nessus, and other crew members on a mission to explore Ringworld, a massive abandoned megastructure that encircles a star, to determine if it poses any threat to settled space. They crash-land and face various challenges as they seek a way to repair their ship and return home. The story includes themes of advanced technology, exploration, and encounters with alien species.