An Apprentice's Future

#28 in series w/Reina Grayson. The LOD has won, unless Rave & Archeron (Omega Squad) go back in time to stop Stalker from killing off Roy Harper & Reiena Grayson & rescue Wally West from the Speed Force. Can they do it? Can Dick, Jason, Tim, Barb, Bruce & Terry work together to keep the LOD from getting Watchtower? Can the Batman Beyond Young Justice team prevail?