The village of Darbin has fallen under the control of Kurishan, a mad wizard who recently died and was reincarnated as a shambling mound. He has created a new kind of plant, the brainvine, and is using it to possess the villagers. When contact with the town is lost, the PCs are sent to investigate.
A wealthy sea-trader hires the PCs to solve a pirate problem and recover stolen supplies. Almost 100 pirates have made base in a treacherous cove. When the PCs arrive, most of the pirates are at sea on a mission. A large host of pirates remain in the base and force PCs to be creative with their approach, as a direct attack would be met with an overwhelming swarm of pirates. Unknown to the player's as they scheme is that the ship will soon return with its massive crew. The treasure cave is guarded by the dead sailors foolish enough to try and steal from the captain, who is the only one who can enter the cave safely. Players must be creative to deal with the pirates in the base and the approaching ship while still securing the plundered supplies in the treasure cave.