
The Black Market has recieved some worrying information that a sophisticated auton has been developed that can detect contraband even inside a smugglers compartment. St Katherines Commonwealth fascists are going to experiment with one of these "Beagle" autons to test their efficiency and effectiveness, and a prototype is on its way there - passing through your system as we speak in an unguarded mega-freighter.
The black market gives you the coordinates to find the freighter, and tells you it should be an easy mission, blast the freighter into submission and take the prototype auton back to them, so it can be examined and they can recalibrate their smugglers compartments against this new threat.
As soon as you find the freighter and attack it however, it starts deploying random autons one every few seconds to defend itself. Obviously there isn't much threat if it deploys a mule, but sentinals, battle autons and so on soon add up.
When you finally destroy the freighter it dispatches as its last action a dozen or so defective autons that start homing in on you. You can loot the freighter for the prototype auton, maybe a few unactivated autons, armour etc.
I think there should be consequences for failing this mission; if you fail to kill the freighter and take the auton before it leaves the system, you won't be able to deal any contraband in St K's. It all gets confiscated, regardless of whether you have a smugglers compartment.