The principal plot about this title is all about The Burning Legion trying to conquer the fictional world of Azeroth with the help of the undead army led by the fallen Paladin Arthas Menethil, but the Humans Alliance, Night Elves and Orcs Hordes combined Efforts in order to stop them from corrupting the World Tree. This game takes place after the events of Warcraft: Orcs & Humans, and Warcraft 2: Tides of Darkness, the game was set in the Warcraft fictional universe and it's the first 3D game of the series. Warcraft 3: Reign Of Chaos is a high fantasy real-time strategy computer videogame developed and published by Blizzard Entertainment released in July, 2002.