Take everything with a healthy dose of skepticism, but several sites such as Comic Book Movie and Movie Pilot are reporting that someone has read the script from Captain America: Civil War and leaked all the major plotlines for the movie. They outline everything from the after effects of the events in Avengers: Age of Ultron to the dynamics between the two opposing factions, plus all the sub-plotlines for the newer Marvel heroes. All this supposedly leaked info traces back to a single anonymous 4chan user which definitely makes me pretty skeptical, but the info seems plausible (which might not be so hard to fake for someone with decent comic book knowledge and a good imagination). Click and read at your own risk.