The planet is being invaded by parasitic shape-changing aliens who have a taste for spinal fluid. While many of their victims die, the survivors find themselves with superpowers. These new heroes (among them Tommy Monaghan) must band together with the old to repell the alien invasion.
This is the 3rd Chapter of the Bloodlines cross over. It continues from EarthPlague and continues in the final chapter labeled BloodBath # 1 & 2. The reading order for this arc is as follows: Part 1) Deathstroke Annual #2, Part 2) Eclipso Annual #5, Part 3) Demon Annual #2, Part 4)Batman: Legends of the Dark Knight Annual #3, Part 5) Team Titans Annual #1, Part 6) L.E.G.I.O.N. Annual #4