The Second Imperium is the latest attempt for humans to control the galaxy. Recent tech advances have surged the frontlines into motion again, but the SIM has slowed due to numbers being stretched thin in other areas. Rumor of xeno-terrorism and psionic espionage has the Imperium closely monitoring all starports and jump stations, making good smugglers very rich, and bad smugglers very dead.
The Second Imperium came about after a war between the greater body of the Empire and a separatist movement that came to be known as the Modern Advanced Race Senate. Current relations between the new faction and SIM are cordial but distant. Trade is open, but the Empire is slow to forget the past.