When the adventurers arrive at the Glassworks, they find the building curiously silent. Searching the rooms, they find that goblins have apparently overrun the facility and murdered all of the workers. They find the corpse of Ameiko’s father, Lonjiku Kaijitsu, completely encased in glass, apparently murdered and left on display. In the basement they find a secret passage and stumble upon Tsuto Kaijitsu. Tsuto commands the goblins that are with him to attack the adventurers, but they are quickly dispatched, along with Tsuto. Further exploration of the secret basement uncovers the unconscious Ameiko, as well as Tsuto’s journal, which reveals that he was the mastermind behind the Goblin raid on Sandpoint, and that he is working with Nualia Tobyn, who was presumed to have perished along with her father during the Sandpoint Fire. Drawings in the journal show her with some demonic features, such as bat wings, horns, a forked tail, and fangs. The journal also reveals that another larger-scale goblin attack is being planned for the near future.
After rescuing Ameiko, the adventurers head deeper into the network of tunnels that the goblins have been using to enter Sandpoint. They stumble upon the recently-excavated entrance to an ancient prison/laboratory known as the Catacombs of Wrath, buried deep below the town. Inside, the adventurers face a new threat: Sinspawn born from a magical pool, and Erylium, a Lamashtu -worshipping quasit who sees the prison as her own personal domain. The adventurers defeat Erylium and her Sinspawn, and drain the pool of its power, ensuring that the town above is safe.