Guillermo del Toro explains the plot of his scrapped Pacific Rim sequel
One major character would have made it out of del Toro's version alive

Guillermo del Toro is finally sharing his vision for that Pacific Rim sequel. Del Toro directed and co-wrote the original 2013 film, which is all about humans in the near-future who use giant robots called Jaegers to fight sea monsters called Kaiju in the Pacific Ocean. The Oscar winner was originally attached to write the sequel as well. Eventually, he departed the project, and the ultimate sequel, 2018's Pacific Rim: Uprising, strayed heavily from his original concept.
Del Toro explained his ideas for the sequel in an interview with The Wrap. He said, “The villain was this tech guy that had invented basically sort of the internet 2.0. And then they realized that all his patents came to him one morning. And so little by little, they started putting together this and they said, ‘Oh, he got them from the precursors.’ The guys that control the kaiju. And then we found out that the precursors are us thousands of years in the future.”