Hunt for the Thessalhydra is a short adventure published by Wizards of the Coast as a tie in to the "Stranger Things" franchise and part of the Stranger Things Dungeons & Dragons Starter Set. The adventure features characters, locations, and monsters inspired by that series. The adventure is suitable for characters of level 3-5.

The peaks of a nearby mountain range have been home to Krikk, an old white dragon, for as long as anyone can remember. Aside from claiming ownership of a few villages and settlements near her range, she hasn’t posed much of a threat or even taken much notice of political events around her. Last week, a king’s prophet had a vision of golems made of ice that wouldn’t melt smashing through the royal castle walls, and of crops frozen under sheets of ice formed by the white dragon’s breath. Alarmed, the king has sent word that he desires someone brave enough to go to the dragon and find out whether she’s about to attack. If she is, the party must stop her before it’s too late. But, another prophet warns that the white dragon has an entirely different plot afoot, and that an icy grave awaits anyone who goes up the mountain. The player characters (PCs) have to figure out what’s going on—then decide on their own what they should do about it, while the fate of a king and his castle hangs in the balance.

A trek across the Shadow Marches leads weary travellers to Blackroot, a quiet village of ramshackle huts nestled among the darkwood trees. Here, orcs and humans live in peace. However, all is not well. Something evil has crawled up from below, threatening to devour the village and its denizens. Only a party of brave heroes stands in its way. In Khyber’s Harvest, the PCs battle an ancient evil threatening a remote village in the Shadow Marches. The dark power of the planes has grown strong in this place. Depraved cultists and twisted aberrant creatures are dragging innocents down into ancient caverns to undergo a horrific transformation. To save these helpless villagers, the PCs must overcome the terrors of Khyber—a quest that brings them to the attention of the dreadful Belashyrra, the Lord of Eyes.

E2, following up on Death's Reach, the PC's first travel to Sigil following the smuggled remains of the primordial Timesus. The pursuit then leads into the Abyss, through the White Kingdom to face Doresain, the Ghoul King, exarch of Orcus. The module certainly is epic, placing the PCs up against powerful monsters like greater demons, death knights, and a demilich. It may be frustrating that the PCs arrive too late to disrupt the plot (have to allow for the finale in the next adventure) but taking out Orcus' right hand ghoul may be satisfying. Includes a skill challenge for crossing a portion of the Abyss For environments, City refers to Sigil.

An exiled cultist and his kobold minions are spotted searching for long-forgotten ruins in the Dragonspire Mountains. Rumors say he looks for a precious gift to give a fearsome dragon that dwells there. What he hopes to attain with his gift is unknown, but can't be good for the citizens of Phlan.

The Approaching Swarm is a short adventure for four 9th-level characters. The party can consist of any mix of classes, but it should include at least one character that is good in wilderness settings, such as a druid, ranger, or barbarian, and at least one cleric. This scenario should prove a reasonable challenge for characters from 8th to 10th level. The adventure takes place in a swampland that is near a small settlement. The characters attempted to cross back through the swamp to their base of operations. Along the way, they may have got stuck in mud and probably were attacked by a variety of flying insects. They arrive just a bit too late to stop a massacre that occurred back at Crivdall -- the fort is ruined and it appears that almost everyone is dead or missing. Aleretheral, an insane half-orc druid who has mastery of vermin and insects, attacked Crivdall with his insects. He has often infiltrated Crivdall by posing as a harmless elf hermit who lives in the wood. In reality, he wants the settlers destroyed and out of his swamp.

The recent discovery of an entrance to the Underdark has set local leaders on edge. In a display of initiative, the First Lord of Hillsfar has ordered the construction of defensive structures surrounding what locals have begun to call "The Waydown." You have been charged with escorting an emissary back to his home in the Underdark without alerting the Red Plumes.

Strange things are afoot in the Moonsea. The factions have called all those willing and able to investigate strange occurrences in the region surrounding Phlan. Dark whispers and unseen terrors lurk in the misty shadows between this world and someplace much more sinister. Unveil the horrors before it is too late! Part one of Misty Fortunes and Absent Hearts.

The Raven Queen’s servants often seek out mighty allies. One of these is the black dragon Quetzallus, who resides in a deep cavern on the Shadowfell guarding a stream of souls flowing into the Raven Queen’s realm. But a death knight named Raxikarthus, betrayed by the Raven Queen in life, now seeks to enslave this dragon for his own purposes. He madly believes that he can stand against the Raven Queen, and seeks allies of all stripes—even her own servants—to do so. The death knight has found a pathway into the Shadowfell thought closed by mortals. Beneath a decayed keep, the undead dragonborn has reopened this portal and led his forces into the Shadowfell itself. The PCs are called in to beard the death knight in his lair. They find it abandoned, but discover a strange passage in the lower reaches. Pgs. 162-167

Inspired by the campaigns featured in the Critical Role podcast, this adventure takes place in the land of Exandria, with players tasked with uncovering the secret behind an ancient underwater realm known as the Netherdeep. The campaign itself is designed to take characters from Level 3-12 and also explores a large area of the continent of Wildemount.

Into the Dragon's Lair takes place in the Forgotten Realms setting, and takes place after the novels The High Road and The Death of a Dragon by Troy Denning. The nation of Cormyr tries to rebuild after the death of King Azoun IV, and seeks the treasure hoard of a dragon to fund these efforts and keep the kingdom from falling into chaos. The player characters must find this treasure before all the other seekers.

From The Magazine: "Every summer, Duke Hightower holds a competition quite different from the traditional jousting and archery tournaments held by similar lords of his station. The rules of his tournament change from year to year, and, to oversee the games, the duke has appointed two wizard brothers who help choose the setting and create the rules and challenges of the competition. This year the competition is called the “Owlbear Run,” an overland race that requires each participating team to escort a live owlbear from the town of Telvorn to the town of Milvorn. The teams will face a variety of challenges; some are devised by the wizards, others by the competing teams or their sponsors, and some occur entirely at random. All of these tests are in addition to the challenges inherent in motivating a temperamental owlbear. Fortune and fame await the first team to cross the finish line, and the local lords sponsoring the race are eager to enlist skilled champions for their causes." Pgs. 2-27

Part Three of the Umbral Aristocracy Trilogy. You’ve been set up. However, the man you were set against is more than willing to forgive and forget, if you are willing join forces to seek a terrible vengeance.

Listen up! You're in my dungeon now, Morty! On Earth C-141, I'm a LEGENDARY D&D adventure writer! When people think of impossibly difficult dungeons or winding, labyrinthine maps, those things ain't Gygaxian - they're SANCHEZIAN! I do whatever I want over there, and they eat it up! I'm a celebrity Dungeon Master there, too! My livestreamed show, Cynical Troll, gets a billion views a day! It seemed a little selfish to contain all that GREATNESS to a single dimension, so I lifted one of the all-time favorite Sanchezian adventures and snuck it back here to dimension C-132. (Usually that kind of s**t is frowned upon, but it's just a D&D adventure. We're not exactly violating the Prime Directive or whatever.) This is a good old-fashioned dungeon crawl for a party of 1st-level adventurers, whose character sheets in this box should also contain. They'll probably reach 3rd level by the end of it. So here it is. This adventure brought peace to a warring galaxy. What did you ever do? Oh, you picked up this adventure? Good start. And awaaaay we go!

Janos Meer, the powerful underworld figure known as the Beggar King, has vanished. Gribbits - Meer’s right-hand goblin - has tasked a group of neophyte adventurers with getting to the bottom of where his boss has gone, and why. This is easier said than done, of course. The explosive destruction quite accidentally meted out by the Dragon Friends some months prior has made their city a dangerous place. It’s up to the adventurers to follow the clues through the urban chaos, unravel the mystery of the missing Meer, and maybe - just maybe - expose a conspiracy greater than any of them expected. The Gribbits Detective Agency is a Dungeons & Dragons adventure for four 1st-level characters.

Baron Rajiram’s forces have secured the Nelanther Isles and have scoured the Sword Coast for treasures. Now they have begun to explore a mysterious island that recently just popped into existence nearby. SEER seems to believe that an aboleth artifact is their goal. It is up to the adventurers, in competition with the baron, as well as aboleths, the Kraken Society, and the mysterious caretaker of the island, to locate the Eye of Xxiphu and avert catastrophic disaster.

Baron Rajiram’s forces have secured the Nelanther Isles and have scoured the Sword Coast for treasures. Now they have begun to explore a mysterious island that recently just popped into existence nearby. SEER seems to believe that an aboleth artifact is their goal. It is up to the adventurers, in competition with the baron, as well as aboleths, the Kraken Society, and the mysterious caretaker of the island, to locate the Eye of Xxiphu and avert catastrophic disaster. A Four-Hour Adventure for 17th-20th Level Characters. Optimized for five 17th-level characters.

The Underdark holds many secrets. A series of earthquakes and eruptions have rocked a normally placid land. Strange creatures sighted in the dark of night raise fears across the already disturbed countryside. As tales of a lost race that once warred with the drow begin to surface, only the boldest adventurers dare to descend into the shadowy darkness.

Trouble darkens the shores of the Vezdali Peninsula when an earthquake hits, sending part of the village of Palma Flora down into the sea. Seizing their chance a tribe of Sahugain descend upon the village, lead by their leader Selachai, a Sahugain Warlock.

Can the city of Redshore be saved from utter destruction? "The Razing of Redshore" is a D&D adventure that confronts the party with the destructive force of an awakened sperm whale druid and the sinister machinations of a secret cabal of powerful assassins. It is designed to provide such a group with an opportunity to continue their adventuring careers into the realms detailed in the "Epic Level Handbook". This book is not required to make full use of this adventure, though; any pertinent information from the supplement is reproduced here. Pgs. 72-106