A force from Equestria's past that not even Princess Celestia is aware of has returned and all of Equestria is in danger! A threat from the centre of the planet itself! In order to fight this great danger Twilight Sparkle the Green Lantern of Sector 2812 must join forces with Equestria's heroes to save the day!
Takes place in Earth 52.
based on New 52's Justice League Volume 1: Origins and Justice League: the New Frontier.