7: Rise of the Dark Side (Palpatine cloned himself and he isn't actually dead. Battles Luke who is now a Yoda-level master)
8: Dawn of the Mask (Luke, ruminating about his father, finally loses it after spiraling into depression- he dons the Darth Vader suit)
9: Journal of the Whills (Leia joins the dark side and dons some kind of breathing mask like the one at the beginning of ROTJ- likes to choke people like Darth Vader)
10-12: Luke's children come back and destroy the Empire once and for all.