Feature-length animation following the adventures of the DC Comics characters. When Earth is invaded by supernatural forces, Batman (voice of Jason O'Mara) assembles a unique team to deal with the threat. He enlists the help of occult detective John Constantine (Matt Ryan), magician Zatanna (Camilla Luddington), ghost Deadman (Nicholas Turturro), Etrigan the Demon (Ray Chase), Swamp Thing (Roger R. Cross) and the Black Orchid (Colleen O'Shaughnessey) to take on the dark side of justice.