From time immemorial, the rulers of the mortal world have been counseled and tempted by capricious primordial spirits who rule over the elements. The greatest and most sinister of these was a half-kraken medusa known as the Maelstrom Queen, who sought to supplant the mortal races with her own line of immortal tentacled monstrosities. On the verge of her ultimate triumph, when the leviathans at her command rose from the depths, a legendary assassin murdered the Maelstrom Queen in her half-submerged palace with her own weapon. But the primordial mistress refused to let something as trifling as death put an end to her designs. Every 13 years, she regenerates enough mystic power to rise again, and the world’s greatest heroes are sent to murder the Maelstrom Queen once more.

A newly constructed temple of Bahamut lies along a road outside a rural township. As the PCs approach the place, a scream for help erupts within it. Pgs. 60-65

A nest of vampires has claimed a dark forest and the surrounding human towns as its domain. Some of the local residents revere the vampires and serve as daylight guardians and spies. However, most of the townsfolk live in a state of dread. Those townsfolk have finally scavenged enough valuables to hire a band of adventurers to destroy the nest. Pgs. 66-71

When the fires smoldered in the belly of an ancient red dragon tyrant, and his thirst had been slaked by the blood of countless innocents, the old wyrm made a deal with a succubus to spawn him a son and ensure his name would live forever. The demon held true, though she imbued the wyrmling with her own infernal blood. Those who fear and serve the abominable spawn of this pact know him as the Wyrm Prince. Cast into the abyss centuries ago by the legendary Three- River Paladin, the Wyrm Prince licked his wounds and recovered his strength. The Three-River Paladin has passed into legend, and the Wyrm Prince has resurfaced, his vengeance awakened along with his hunger. The Wyrm Prince sacked the high city Zhaldanis, slaying its people and claiming the greatest gift from the gods — the Soulstone. At this late hour, you must venture into the catacombs of the Wyrm Prince before the Soulstone loses its power and all mortal souls are damned.

The Raiders’ Hideout is a series of underground chambers (or perhaps the interior of a pyramid) that serves as a base of operations for a band of gnoll desert raiders. The PCs have come to exact a measure of justice for recent brutal caravan raids. They’ve tracked the gnolls to their lair, where they intend to end the threat to desert trade once and for all. Pgs. 30-35

Something stirs in the dark heart of the Warwood, and in response something stirs in the stars. A simple encounter with bandits on the road leads the PCs to a frightening place where even dreams are deadly. Cultists seek to free the soul of a terrible entity from beyond the stars. The PCs must retrieve the soul vessel of a long-dead evil paladin to stop cultists’ plan from coming to fruition. Pgs. 60-92

A short 2-combat side trek: After confronting an ettin and its pet owlbear, the PCs descend into an ancient ruin holding a portal to another plane, protected by a naga, an eidilon and a sea of serpents.

A half-marilith, half-medusa druidess lich known as the Hate Blossom lairs in this dungeon, having been run out of mortal society and shunned by demonkind. She possesses the petrified-yet-still-living body of Melenkir, the first human arch-mage and the single creature to remember a ritual that may save the realm from an extraplanar threat. Only slaying Hate Blossom or convincing her to lift the curse will revive Melenkir. Published by Defy Danger and Save Verses Death

The Auburn Desolation is a forsaken waste of treacherous sand and unbearable heat within the Shadowfell. Gloom-wrapped serpents and foul undead haunt the wastes, striking out at unsuspecting travelers from sandy graves. Pgs. 88-95

New to Loudwater, the heroes learn of a tower locked in ice in the nearby wilderness. Traveling there, they discover that the tower’s master left many surprises behind for the unwary. Also available with e 5e solo conversion: https://www.dmsguild.com/product/247505/DD-Solo-Adventure-Menace-of-the-Icy-Spire-5e-Solo-Conversion Pgs. 4-22

A group of mysterious, sea raiders— capable of appearing from out of nowhere, striking, and disappearing— has terrorized a group of coastal states for some time. Now the leader of the states has asked the characters to infiltrate the raiders, find out how they operate, and put a stop to their activities. But once the heroes join the raiders, things aren’t as clear as they were led to believe. Will they succeed at their mission? Or join the raiders themselves? Pgs. 54-82

At Restwell Keep, you've heard that fortune and glory await those bold enough to brave the dangers of the Chaos Scar, a valley carved ages ago by a fallen star. The same tales warn that this Chaos Scar draws wickedness to it. Perhaps you can help stem this tide... and gain treasure along the way. While the location is a different keep, this adventure is an homage to B2 Keep on the Borderlands(https://adventurelookup.com/adventures/b2-keep-on-the-borderlands)

On the outskirts of town lies an ancient temple to an unknown deity. Periodically, undead creatures issue from the catacombs beneath it. The party receives a commission from the city elders to venture into the catacombs and exterminate the undead. Pgs. 64-71

To stop a devastating rampage of giants across the land, the party must venture into the lair of the stone giant thane Arnak to uncover the truth about why he has broken his peace with the neighboring dwarves. In the process, they will have the opportunity to retrieve important symbols of the fight against the giants and uncover a dangerous excavation. The adventure is part of the "Against the Giants" series originally by Gary Gygax, hence the writing credit.

A deathpriest hierophant of Orcus has turned the lower catacombs of a cemetery into a base for the undead and demonic horde it is gathering. The deathpriest loses control, however, with the arrival of a balor, and its carefully orchestrated forays to snatch victims have turned into wholesale slaughters. The PCs arrive in a nearby town to meet with a merchant who promised to sell them a long-coveted magic item. They are not altogether pleased to arrive to find the aftermath of a brutal attack—and no sign of their item. Pgs. 150-155

This is Part 1 of an adventure designed for characters of the 20th to 21st level About 200 years ago a horrific massacre took place on the remote Soron island of Heikun. For months, the deranged and corrupt priests had sought to create a race of hybrid Snake-Men...a race which they believed once existed in Soro. They kidnapped folk from surrounding villages and took them back to their temple. There they performed unspeakable rites and experiments. Sensing their debasement, the dark spirits of the mountains called to the priests in their dreams, luring them down into the vast sub-levels beneath the Pyramid. Somewhere in the cavernous depths they were touched by an eternal evil and given horrific new forms. The deformed priest-things of Heikun crawled back to the surface, systematically destroying all living creatures in their path, including the city's hapless, ineffective leader: the inbred boy-king Yusef.

Uncover a Hidden Legacy A lost passageway on the upper level of the most infamous dungeon in Faerûn has recently been uncovered. When a patron hires a band of adventurers to brave the dangers of Undermountain, a search is on to uncover secrets of an apprentice of the dungeon’s lost creator – Halaster.

In this adventure, the Lord Commander of the Sharn Watch hires the heroes to investigate the murder of an actress. The investigation quickly spirals into a bloody dispute involving a dead wizard’s spell-book, political rivalries, and secrets that might foment war among the Five Nations. Pgs. 1-37

Protect the Future! At the height of Netheril's power, the fortress of Spellgard held many great secrets of the Empire of Magic. Now, only ruins remain... and one last guardian, the near-mythical Lady Saharel, whose prophetic visions draw the desperate and the doomed from across Faerun. But a dark presence in one of Spellgard's intact towers wants to control the power of prophecy for itself and remake the future in its own image.

Orcus, the Demon Prince of Undeath, craves the power of the Raven Queen and mastery of death's domain. The key to his ascension and the secret to his destruction lies buried in the heart of the Abyss. As heroes chase Orcus into the abyssal depths, evil opposed them at every turn, and each victory brings them closer to their final fate. Concluded the epic series of adventures and the entire story line begun in Keep on the Shadowfell.