[Almost] always generating new spoilers! As seen on xkcd.com/2243/
In this Star Wars movie, our heroes return to take on the First Order and new villain:
Malloc with help from their new friend Yaz Progestin, Rey builds a new Lightsaber with a mauve blade and they head out to confront the First Order's new superweapon, The Sun Obliterator a space station capable of blowing up a planet with a bunch of beams of energy that combine into one.
They unexpectedly join forces with their old enemy the bottom half of Darth Maul and destroy the superweapon in a battle featuring a Sith car wash where the bristles on the brushes are little Lightsabers.
P.S. Rey's parents are Obi-Wan and the one driod from the Jawa sandcrawler that says "GONK".