How to do Eco-Terrorism for Fun (and Profit)

You are being sent to the beatiful Aroqq Bay, a small white sand bay on the Apeland Atoll.
Usually an idyllic paradise with little worries,
housing a small Town of no more than 500 souls.
Atop a small hill there sits Aroqq Manor,
a large open structure erected by the Townsfolk to gather, celebrate and enjoy the spoils of their labor.

Recently however, the Peace has been disturbed by a local (free-)trader,
who seems to have brought several misfortunes on the place:

• He has taken 'Refuge' inside the manor, fortifying it and restricting access
• The usually temperate climate was replaced by a heavy rain
• Several townspeople have contracted a weird illness, breaking out in hives and pustules among other symptoms

Mission Statement:

Ensure the Inhabitants continued wellbeing by taking care of the listed problems,
ideally at their source;

Port-In Location:
The Gilded Trout, the towns most trusted joint.

• Taranis