instantaneous-transportation

In the chapter "Preamble" of Ringworld, Louis Wu, a two-hundred-year-old man, travels through various global cities connected by instantaneous transfer booths, reflecting on the homogenization of Earth’s cultures. He unexpectedly encounters a Pierson’s puppeteer, a long-absent alien species, who reveals an urgent galactic threat and proposes forming an exploration team, setting the stage for a larger adventure.