In addition to the main campaigns, a bonus campaign is also offered - The Foundation of Durotar, in which the beast tamer Rexxar helps the orcs defend their home from many enemies and develop it. The third campaign will show a civil war in the ranks of the Scourge, split into two camps - loyal to the Lich King, led by Kel'Thuzad and Arthas, and Sylvanas Windrunner with her rebels. The Alliance campaign follows the adventures of Prince Kael'Thas, leader of the blood elves who survived the invasions of Quel'Thalas and the Scourge. The first tells about the pursuit of the night elves led by Mev Shadowsong for the dangerous criminal Illidan. Several story campaigns are presented to the attention of the players.
Many of the ambiguities of the original game are answered here, and there are several additional branches that serve as the basis for further conflicts. The events of the game develop about a year after the original and three years before the start of the events of the legendary World of Warcraft.
The events of the story campaigns tell about the transformation of Arthas into the Lich King, the adventures of Illidan, the difficulties of the blood elves, the tension between the Horde and the Alliance, and many other stories. Warcraft 3 frozen throne - is an expansion for the original Warcraft 3 Reign of Chaos.