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!