A Prefab Encounter: A Needle in the Haystack

From publisher blurb:

The Merrell Farmstead is a relatively large sized farm located on the subtle boarder between colonised wilderness and the wild environments. It’s isolation has allowed the farming family to expand their paddocks, crops and cattle seemingly unopposed for generations and have become known for the quality and volume of their produce.

Recently there have been rumours about a goblin attack and a strange plague which has swept across the farmstead. Can the heroes find the source of this strange plague before it is too late and can they uncover the true motive behind the goblin horde.