THE TERRIFIC TEN ARE ON A DO-OR-DIE MISSION! As the tournament begins and the transformation of Earth GROWS MORE DIRE, a strange signal is detected at the heart of darkness at the core of the planet–a Terrifictech device?! Michael Holt must put together an elite Justice League squad of the most powerful time-displaced heroes from We Are Yesterday to unravel the mystery–and this mission is a oneway ticket. Get ready for a mission to hell and back in this epic tie-in to the DC K.O. event!