it goes like this...
Darth Vader i think again hides star killer from emperor and creates a clone who gets memories of Juno and kota and tries to find them again. but what the clone doesn't know is Darth Vader betrayed the real star killer so he has Darth Vader telling him what to do and kota telling him that Darth Vader will betray him as he doesn't know who to believe
as far as i know that is the story.
but it is certainly a clone