If you are not familiar with Justice League Dark it was introduced as part of DC’s New 52 initiative and featured a roster comprised of John Constantine, Zatanna, Madame Xanadu, Deadman, Enchantress, and Shade the Changing Man. The team was meant to be a Justice League-like group that focused on Supernatural and Magical threats, but it wasn’t actually related to the league in any way. In fact, they really don’t want to be a team at all, but they end up grouping together for the greater good.
The trailer is just under two minutes, but it packs in plenty of action. The footage shows the Justice League scrambling to end a global phenomena being caused by dark magic. People all over the world are being plagued with twisted nightmares and visions, and the Justice League is at a loss. However, Batman believes John Constantine is just the man who can help end the crisis - and so begins the story of Justice League Dark. Constantine recruits the help of characters like Swamp Thing, Zatanna, Deadman, and Etrigan the Demon to help the Justice League take down their supernatural enemy.
For those of you who paid attention to the trailer, you might have noticed something particular about the film. It seems like Justice League Dark will follow after The Killing Joke and bear an R-rating due to “disturbing violence.” Clearly, when you are messing with the occult and demonic forces, some messed up things can go down.