During the invasion of Ash Valley by the Burning Legion, Illidan absorbed the energy of a powerful sorcerer artifact called "Gourdain's skull", changed into a creature with demon appearance and great power, and gained some memories of Gourdain, especially about the tomb of Sargeras.
Then he met Kilgardan. The demon realized that his masterpiece, the Lich King, had become too powerful to control, and ordered Illidan to end Ner 'Ozu and destroy the power of the undead scourge forever. In exchange, Illidan will gain great power and occupy a place among the leaders of the Burning Legion.
Illidan agreed to this plan, and immediately began to prepare to destroy the frozen throne that imprisoned the soul of the Lich King. He needed a powerful artifact, so he summoned Naga from the dark deep-sea nest to find the broken island where the legendary tomb of Sargeras was located.
At the same time, Maiev Shadowsong, the warden, also began to hunt him down, but without success. Illidan successfully stole the eye of Sargeras and came to Dalaran. Taking advantage of the powerful function of the energy device in the city, he cast a devastating spell that shattered the defense force of the Lich King and split the ridge of the world, but was stopped at the last moment by Malfurion and the priestess Tyrande who came to support Maiev.
In order to escape Kilgardan's punishment for his failure, Illidan fled to Outland and decided to take shelter here and plan his next move. After successfully stopping Illidan, Malfurion and Tyrande returned to their homes in Grey Valley to take care of their people. However, Maiev did not intend to leave it at that. She followed Illidan to Outland and made up her mind to take him back for trial.
Lordaeron and Quel 'Salas have completely turned into places full of poisonous plagues. There are only a few small-scale alliance resistance forces still alive. One of the organizations is mainly composed of high elves, and its leader is Prince Kael'thas, the last member of sunstrider dynasty.
The high elves were very sad about the fall of their homeland. In order to pay tribute to their dead compatriots, they renamed themselves blood elves. They suffered because they left the well of the sun, the source of strength. In order to alleviate his men's innate thirst for magic, Kyle accepted the help of their high elf ancestors and joined Illidan and his Naga army.
This made the blood elves condemned as traitors by the remaining alliance leaders and expelled forever. Desperate, Kyle and his blood elves had to follow Illidan to Outland to help him deal with Warden Maiev. Maiev had captured Illidan, but was defeated by the blood elves and Naga, and Illidan was liberated again.
Because of a gap in his own defense, Ner 'Zu, the lich king, lost his strength day by day, eager to protect himself. He summoned his powerful death knight Arthas to his side. Because Arthas' power was gradually lost with the weakness of the Lich King, Sylvanas Windrunner, the banshee, led half of the undead army to launch a coup to overthrow Arthas' rule.
In the end, she and her undead rebels (the forgotten) took the ruins of the capital of Lordaeron as their own. Weakened, Arthas decided to rescue his master. When he arrived in Northrend, he found that Illidan's blood elves and Naga had already arrived there before him. So Arthas and his Scourge Corps had to compete with Illidan's troops for time.
With the Lich King giving all his strength to Arthas, Arthas finally defeated Illidan and reached the frozen throne first. He smashed the ice prison where the Lich King was imprisoned with Frostmourne, and put a helmet with the power of Nero Zu on his head, becoming the new Lich King. Illidan and his army were forced to flee back to Outland in disgrace.
Extended information
Game mode:
1. Single player campaign.
The new campaign of the game has two branches, namely the Night Elf Sentinel series and the independent series of Dulong Tal. The sentinel campaign needs to be unlocked step by step. In addition to plot battles, the game also allows players to carry out custom battles, and some official or amateur campaigns and RPG maps are usually carried out through this mode.
2. multiplayer games.
in addition to the campaign mode, the game provides online battle mode and Battle.net mode. Among them, the online battle is similar to the previous generation works, and it can accommodate 12 players in groups. The game provides a video recording function. The way to watch the video is to choose a single-player game and then choose to watch the video.