UE mission

I talked to the renegade on that southern station, what should I do next?

I think you travel back to Lothe Prime but on your way you happen to see a ton of renegades in a system and that starts the mission off of Lothe Prime

It is Iothe Prime, and I suggest you gather all of the weapons and power for this mission.

You talk to the crook twice. Both times you go back to Iothe. The first time, you go back and raid P-something in the S-something. The second time you go back and fight that nasty Turncoat and high-tail it to Knox.