The biggest highlight of the game is its storyline. The best way to experience the story is by playing the campaign mode, which is therefore very important. Below, I will tell you about all the campaigns in Warcraft III: The Frozen Throne. If you don't know how to start this mode yet, be sure to follow my steps. I will introduce the chapters of each race's campaign and share how to start the campaigns.

1. Campaign Storyline:
1. Night Elf Sentinel Campaign - Tide of Darkness: Rise of the Naga, Broken Isles, Tomb of Sargeras, Betrayer's Rage, Unfinished Business, Balance of Power, Shattered Alliance, Malfurion's Vision, Ruins of Dalaran, Sibling Rivalry, Parting Ways.

2. Human Alliance Campaign - Curse of the Blood Elves: Misunderstanding, Dark Pact, Dungeons of Dalaran, Crossroads, Edge of the World, Search for Illidan, Illidan's Task, Gates of the Abyss, Lord of the Edge, Kil'jaeden's Command.
3. Undead Scourge Campaign - Relics of the Damned: Arthas the King, A Kingdom Divided, Torino Darnassus, Sylvanas' Farewell, Lady of Darkness, Return to Northrend, Defeat of the Dreadlord, New Forces in Lordaeron, Deep into the Underweb, Forgotten Power, Passage to the Upper Kingdom, Symphony of Fire and Frost, Long Journey.

4. How to Start the Campaign: First, enter the main menu of the game, click on [Campaign] at the top or use the shortcut key [C], then select the campaign you want to play and start the game.

Above is the guide to all the campaigns in Warcraft III: The Frozen Throne. These are the names of all the campaigns for each race. After completing all of them, you can choose any level you wish to play. If you haven't completed them yet, you will need to play through them one by one.