This edit combines the Joss Whedon cut of Justice League with the following Smallville episodes:
The mother boxes and the search for the stones are parallel plotlines. Clark trying to turn his back on his destiny and failure to secure the Stones triggers the arrival of both Steppenwolf and Apokolips. The League search out Steppenwolf as he secures the boxes in his own quest. Both storylines ultimately merge into one as Clark embraces his destiny and helps the League defeat Steppenwolf.
Currently rendering the third draft, with luck I intend to release this on the same day as the Snyder Cut