level_range: "1-5"

The Abyssal Siege of The Bastion

The Abyssal Fleet—a terrifying armada of necrotic ships and drowned spirits—has emerged from the depths to lay siege to The Bastion, the massive floating fortress-city of the pirate-lord Grom the Unsinkable. This is no mere raid; it is a coordinated effort by the Whispering Lich, Kel'Thuz, to establish a foothold in the Crystal Archipelago. The party must aid Grom in defending the Bastion's core and sinking the Abyssal flagship.

Grom the Unsinkable: A half-giant pirate king who values his fortress-city above all. He is desperate and willing to offer anything to "outside specialists" who can break the siege.
The Specter of the Sunken King: The undead commander of the Abyssal Fleet. He seeks to reclaim a "Necrotic Spark" hidden deep within the Bastion’s bilges to fuel Kel'Thuz’s expansion.

The Chain Hub: A central platform where massive iron chains anchor the hundreds of lashed-together ships that form the Bastion.
The Lower Bilges: A dark, flooded maze of hulls and secret passages where "Drowned Shadows" have begun to infiltrate.
The War-Deck: The highest point of the fortress, bristling with black-powder cannons and currently under heavy fire from "Bone-Galleons."

The Wave of the Damned (Combat): Repelling a swarm of Drowned Shadows that are scaling the outer hulls and bypassing the Bastion’s arcane wards.
The Leviathan’s Breach (Challenge/Combat): A massive "Leviathan Husk" (an undead kraken) is ramming the hull. The party must descend into the flooded bilges to strike its "Necrotic Heart."
The Traitor’s Signal (Investigation/Social): Identifying a member of Grom’s inner circle who has been sabotaging the ward-drums and signaling the Abyssal Fleet.
The Flagship Boarding (Combat): A final, daring boarding action against the Bone-Galleon flagship to defeat the Sunken King and retrieve his logbook.

Success: The Abyssal Fleet is driven back. The Bastion is saved, and Grom grants the party permanent "Safe Harbor" and access to his legendary armorers.
Failure: The Bastion is overrun. Crystal Cove falls to the undead, and the Crystal Archipelago becomes a necrotic wasteland.
Loot: Ghost-Anchor (tethers a ship to the Ethereal Plane), Grom’s War-Hammer (deals extra damage to undead), and a Sunken King’s Logbook (contains intel on Kel'Thuz).