Rotten to the Core is the second adventure in the Shadows in the Mist campaign. It can be played as part of that campaign or as a standalone adventure. You can purchase each adventure in Shadows in the Mist individually, or buy the complete collection here.
There is something rotten at the heart of Anvilgard. The defoliant cannons that protect the city from the aggressive growth of ever-encroaching jungle have been sabotaged and the city is undefended. Bickering and infighting cripples the Grand Conclave, and the city teeters on the brink of disaster. Someone must do something before Anvilgard rots from the inside out.
Rotten to the Core follows the events of Blood Tide and sees a party of Soulbound heroes fight their way back to Anvilgard only to find it under attack from the servants of Nurgle. Disposing of the creatures, the heroes learn that the defoliant cannons that normally protect the city seem to have failed or been sabotaged. They must discover who is responsible before Anvilgard is overrun by the deadly jungle. The party’s actions set into motion events that will shape the future of the City of Scales.