I need your help with a story

I finshed Descedants 2 not too long ago but I need help to put my own twist on the movie's events for a tie-in story for my Fanfiction series other than including CJ and Zevon. Any ideas?
Also here's what I have so far: https://www.fanfiction.net/s/12538717/1/Descendants-2-Uma-s-Debut-Universal-Knights-TEST-mission