Necromongers versus Star Wars
The Necromongers (Chronicles of Riddick) have decided to take over the Star Wars universe. Six different scenarios:
Scenario one: Beginning of Revenge of the Sith. The Seperatists and the Republic recognize the threat. They decide to work together to defend the galaxy against the coming threat.
Scenario two: Same as above, but the Seperatists decide to flee, leaving the Republic to fight this battle alone.
Scenario three: Seperatists versus the Necromongers.
Scenario four: Beginning of Return of the Jedi. The Empire and the Rebellion recognize the threat and opt to work together to defend the galaxy.
Scenario five: Just the Rebellion against the Necromongers.
Scenario six: Just the Empire against the Necromongers.