Otyugh

Otyughs are the quintessential sewer-crawl monsters, ones that have been with us since the very first publications of the world's oldest roleplaying game. They have tentacles, look weird, and eat garbage, which makes them the perfect sewer encounter, right?

Wrong. I mean, you can use them thusly, and with their slew of garbage and tentacle-related activities it won't be an uninteresting encounter either, but come on. Take another look at the stat block and fluff text and come back. The otyugh might look odd and feed on literal excrement, but it is at an almost humanoid level of intelligence. Otyughs have something resembling a society. Otyughs are true neutral, and while decidedly alien they might be willing to reason with you. So I beg you, be creative and don't waste the waste eaters on forgettable encounters.

- Nemanja

Hook 1 (Max) - Fecal Decal

The duchy of Bayon, glorious golden wheat upon its emblem, is known for its abundance of food, which it exports to all corners of the land. That allowed all of its towns to grow into cities, massive in their scale. With this, certain needs arose, followed by certain problems.

Every bigger town in the area boasts a vast canal system, is typically accompanied by a giant heap of waste produced by its populace and stinks like a disaster.

Coincidentally, when the number of cities increased, the number of crops spoiling did as well—exponentially. The duke is looking for an answer, unaware that it lies directly beneath his grand cities.

Hook 2  (Nemanja) - The Goopy Guildmaster

In the Grand City of Al'Balaar, guilds are organized in a hierarchical manner, with lesser guilds reporting to those more powerful in an almost feudal manner.

To a foreigner, it could be odd that the thieves guild, assassins guild, the guild of lawyers, and other such guilds that operate outside the confine of the law, all report to the Sewersmith guild. Stranger still, it might seem that the guild is made up entirely of members of two less than popular groups; the field operatives are mostly goblins, whereas the top of the hierarchy is ruled by otyughs. The ironically named Underdoge—the ancient, alchemically-empowered Otyugh guildmaster—claims to have given his blessing to the rise of the last seven doges of the "Upper city".

After a career of adventuring, a group of wizards wishes to retire, forming a guild of illusionists to pass on their knowledge. Soon enough, they are approached by a goblin with a tentacle broch inviting them to discuss "matters of the flow of information" with his masters in the sewers...

Hook 3 (Reece) - Tower of Terror

The seat of power for the Relendish Republic within the capital is a point of consternation for many. After a brief and bloody conflict with the remaining royals that wished to hold onto power in Reylar's Rest, the question of what to do with The Steel Palace was a curious problem. An imposing monstrosity made entirely of steel that reached toward the sky, the building had been long ago created by the progenitor of the Steel Kingdom, and the magic that was sewn throughout the walls and into its foundation made it nearly impossible to destroy.

The Council of Guilds instead opted for turning the building into a series of offices for guild leaders as well as a place to house foreign diplomats. While over thirty years have passed since The Revolution, not everything about the building is fully understood, as its original inhabitants have been long since vacated, alongside their secrets.

When the Govenor of a nearby island-state is found dead, seemingly of a heart attack, and partially eaten inside of one of the restrooms, it spawns a controversy. As a new member of the Royal Navy's investigation unit, you are sent to find what happened, and if the building is a danger to others. It wouldn't be such a bad job if it weren't for the smell...