The Time Traveler builds a machine that allows him to travel through time. He travels to the year 802,701 AD and finds that humanity has evolved into two distinct species - the Eloi, a small, weak race that lives above ground, and the Morlocks, an ape-like race that lives underground and preys on the Eloi. The Time Traveler explores this future world and has dangerous encounters with the Morlocks before returning to his own time and recounting his experiences to his friends, though they remain skeptical of his story.