In the city of Waterdeep rests a tavern called the Yawning Portal, named after the gaping pit in its common room. At the bottom of this crumbling shaft is a labyrinthine dungeon shunned by all but the most daring adventurers. Known as Undermountain, this dungeon is the domain of the mad wizard Halaster Blackcloak. Long has the Mad Mage dwelt in these forlorn depths, seeding his lair with monsters, traps, and mysteries—to what end is a constant source of speculation and concern. This adventure picks up where Waterdeep: Dragon Heist leaves off, taking characters of 5th level or higher all the way to 20th level should they explore the entirety of Halaster’s home. Twenty-three levels of Undermountain are detailed herein, along with the subterranean refuge of Skullport. Treasures and secrets abound, but tread with care!

The village of Dreigrenzdal has an enormous problem! On the morning of the town’s annual Spring Market Festival, the chieftain of a clan of neighboring stone giants is found asleep in the town square. When all attempts to awaken the giant fail, the characters must venture into an enchanted grove called the Cradle Wood to search for answers. There, they are caught up in an ancient feud between a hag named Goodie Grimjaw and her wicked sisters. Can the heroes help Goodie maintain the sorcerous ritual that keeps her evil sisters in check? Or will the party fall prey to the machinations of Goodie’s cursed elder sisters, Gertie and Grizzie, and their steel-toothed, construct minions?

An Introductory Adventure for Storm King's Thunder. As evening approaches, you spot a wooden signpost next to a trail that heads north into the hills. Nailed to the post are three arrow-shaped signs. The two marked “Waterdeep” and “Daggerford” follow the High Road but point in opposite directions. The third, marked “Nightstone,” beckons you to follow the trail. If memory serves, Nightstone is roughly ten miles up the trail. This is Chapter 1 of the greater story available for free on the Dungeon Master's Guild.