Beings known as the Tripods have conquered Earth and turned the human race into slaves by implanting everyone over the age of 14 with a mind-control device. 13-year-old Will Parker and his friends, however, plot to defeat the Tripods before a humans are no more. Written by IMDb Editors Robots with 3 legs and a hemisphere on top, known as the Tripods, have conquered Earth and turned the human race into slaves by implanting everyone over the age of 14 with a mind-control device. 13-year-old Will Parker and his friends, however, plot to defeat the Tripods before they take over the whole world and Earth will be theirs. Written by Skandar Keynes