"Perfect Future": The LEGO Movie universe

(Book 3) (THIS BOOK IS CURRENTLY UNDERGOING A REWRITE, SO FORGIVE ANY INCONSISTENCIES) (Includes a bunch of OCs!) A threat from another timeline comes back to haunt Rex, Marie, and their son. Truths will be revealed about Marie's and Rex's past. Their son, RJ, will be caught up in all of it, with his best friend Fait...