Set in 2030, the plot of Tiberian Sun is a follow-up to the original game Command & Conquer, after the end of which the Nod leader Kane is presumed dead. In Tiberian Sun, Kane resurfaces from his hideout with improved military forces and new Tiberium-enhanced technologies, determined to convert Earth into a Tiberium world. The GDI... is tasked with preventing the world from falling into the hands of Nod, this time with the very means of the extraterrestrial Tiberium substance. (wikipedia.org)