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!

East of Beregost, nestled in the outskirts of the Wood of Sharp Teeth, Durlag’s Tower has intrigued and yet stymied adventurers for decades. Stuffed full of mechanical traps and arcane wards, and rumored to be inhabited by fiends, very few have managed to extract any REAL treasure from the former home of Durlag Trollkiller. However, a powerful item in the ancient fight against the giants is said to be housed there, and the cloud giant Baron Rajiram has committed significant resources toward recovering it. After a pleasant tea in her garden, SEER calls upon you to beat him there and put a stop to his efforts! Continued in Durlag's Tomb.

Chapter 1 - When a relative of someone close to the characters goes missing from a nearby village, the players are asked to investigate. The party has to recover stolen goods from a thief before setting out from the City of Ravens Bluff. They travel through the wilds of Vesperin in search of the missing person, finding trouble and helping locals along the way. Chapter 2 - As the journey continues, the party arrives in a small hamlet suffering from a strange blight. The players will need to investigate the situation and choose sides in a longstanding feud between the mayor and a local magic user. Chapter 3 - After clearing a tribe of violent orcs from a nearby mountain pass to protect the residents of a town, the party will have to enter the lair of a long-dead dragon to rescue their quarry from a band of goblinoid slavers, where they discover an entrance into a dwarven city, lost and forgotten centuries ago. Chapter 4 - The party will have to traverse the ruins of the dwarven city, avoiding hazards and battling the horrors that lurk there, to uncover the identity of the slaver's leader. A discovery that will lead them through a treacherous forest to the city of Tsurlagol in search of a pirate ship called the Star Carver, and its drow captain, The Viper's Kiss. Along the way, they meet an unlikely ally. Chapter 5 - Once they arrive in Tsurlagol, the players will have to choose between gaining the assistance of the city council to fight the pirates head on, or making a deal with the Viper's Kiss, herself. The path they choose will either lead to an epic battle on the Sea of Fallen Stars, or into the deadly sewers and tunnels beneath the city to face an enclave of wererats, undead, and a tribe of mad, kraken-worshipping kuo-toa, in search of a fabled relic. The Laughing Horde of Ruin, Part 1 is the first module of an original 5e adventure campaign. It is designed for character level 1-5, and uses material from the Dungeon Master's Guide, Monster Manual, and Volo's Guide.

The sudden appearance of the undead within Port Nyanzaru doesn’t appear to be the only thing on the horizon. A vast horde of skeletons and zombies is moving towards the city and while those of means are safe within the city’s walls, those in the Old City and Malar’s Throat are forced to contend with the problem. Where did they come from? More importantly, what are you going to do to find out? Part Two of The Rot from Within Trilogy.

HSING bears foul news: SEER has been captured. While exploring the ruins of Ulcaster in search of knowledge pertaining to runes (or perhaps even how to create them), they were separated and now the pseudodragon fears the worst. Without SEER's guidance, the efforts of the assembled factions in these recent events may all be for naught.

An expedition to the Amber Temple reveals another major minion of the enemy and uncovers a secret weapon that may help defeat them. Part Ten of Misty Fortunes and Absent Hearts.

Terrible news indicates that some vestige of the long-dead god Moander might be active in the forests near Elmwood. The Town Council is seeking clever adventurers to brave the perils of the Cormanthor forest to breach a lost wizard’s sanctum in search of a way to protect the town. Four hour adventure. Also contains information about the town of Elmwood. Part of the Elmwood Trilogy.

This book goes over the various rules around the faction of the Zhentarim in Phandalin and the Forgotten Realms, making it easy for any new or veteran DMs to integrate it more into the core stories being told, and making the faction feel more useful for the players that choose to join. The adventure, Barrhindlun sees the adventurers working for the Zhentarim and traveling to the town of Leilon and finding their way beneath to the muddy lost city of Barrhindlun, where bandits of the Xanathar Guild have been sent to reclaim a Crystal Orb.

This dungeon is suitable as a one-shot or drop-in for characters between levels 12 and 17. Taken from the Against the Idol of the Sun high-level hexcrawl campaign, the Death Knight's Tomb is a location-based exploration adventure. It features increasing localized time distortions that ultimately pit the party in a fight against an ogre Death Knight and his minions who just destroyed an elven time lab over ten millenia ago, which is just a few seconds ago in relative terms at the bottom level. There are six distinct sections to the dungeon containing four combat encounters of increasing difficulty. As written, the party enters the structure to rescue an overly adventurous Scorpionfolk couple and their rescuers, but they can be omitted or rewritten to any other species.

The Land of Ash and Smoke. Once a hellish landscape of volcanic activity, now a nightmare region that hosts one of the scattered Soulmonger fragments. The fragment’s burgeoning power attracted the attention of the Red Wizards of Thay and, thankfully, adventurers who are willing to risk life and limb to keep the fragment from these vile arcanists. Can you reach the fragment before the Red Wizards make off with it? The hunt is on. Part Two of the Broken Chain Series. A Four-Hour Adventure for 17th-20th Level Characters

Vampires in service to Shar, the Mistress of Night, are somewhere in Vanrakdoom. You must locate them without drawing the attention of the other residents of this dangerous place. Part Two of the Undying Threat trilogy. A 4-6 Hour Adventure for Tier 3 Characters. Optimized For: APL 13

On a busy day in the marketplace, something hurtles down out of a clear sky. When the dust clears, you c can see that it's a ship's anchor, attached to a rope that stretches up as far as you can see. What do you do? Pull you AD&D game players up the rope and into the astounding universe of fantasy space! Send their spacegoing galleon, the Skyrunner, across the vast reaches of Wildspace. Drop them in the Hive, the largest dungeon ever created. Then pit them against the Ravager, a monster that threatens the characters' entire homeworld! TSR 9273