Ok, the story is as follows:
You are the owner of a small pumping station for a fortress, it is your job to pump water, and later magma, to the fortress.
You will have to at first manually pump but later can buy axles and such to power them. You must not let the water level of the fortress get too low,if it does then the farms will not work and fortress food will go down as well as your animals being taken for food, if it gets too high, well I think you know what happens them. There are also seasonal events, such as the elves coming to trade at which point you must drown or burn them. You can invest money in the fort in many ways: Increased food stockpiles (increase max food), more military training (better quality soldiers), better animal trainers (higher level animals), dungeon masters (exotic animals) and more power production (more power available on input axle).
You will be able to setup pressure plates for water and creatures to activate and levers for manual control.
You will be attacked sometimes and this is where animals and soldiers come in, animals can be chained to the floor or let to randomly wonder about (they might run away though) whilst soldiers can be given patrol routes and other orders.
Animals can also be chained to a capstan to provid power.
For a name I was thinking
Slaves to Armok: God of Blood
Chapter II: Dwarf Fortress
Page 4: Pump Operator
But as you can see it is a terrible name! I am accepting suggestions.