Genius Adventures: There's Yer Problem
Whatcha got here is ...
A short, easy-to-run adventure for four 2nd-3rd level PCs.
A powerful merchant has a 'small' problem that requires some adventurers. It is a simple request to enter the unique chambers under his mansion and help repair some machinery found there. The pay is good, the benefits are great, and helping a powerful merchant could lead to many rewards. However, nothing is ever as easy as advertised and the party finds themselves fighting creatures from the lower planes. What exactly is going on with this machine?