It's all-out war among Gotham City's underworld families with Batman and his allies caught up in the ever-shifting tide of deals, murder and gunfire. It all begins with a council of the underworld and continues when the costumed criminals from Deadshot to Mr. Freeze get involved. Batman is aided by Nightwing, Robin, Catwoman, Batgirl, Tarantula, Orpheus and Onyx, but are even they enough to keep the city from being bathed in blood?