Nightwing would be an adaptation of Francis Manapaul's Anarky. Anarky wipes everyone's digital footprint and personal information, triggering mass riots, but it's a diversion while he kills Jervis Tetch. Jim Gordon is killed and Batman disappears while trying to apprehend Anarky. Nightwing investigates, and finds that Tetch was selling mind control technology on the black market by way of the Penguin. Nightwing manipulates things to convince the Penguin that his second in command, Ogilvy, is planning to usurp him. Penguin reveals that Tetch was killed because he was selling his technology; he was living under the protection of the Court of Owls, who did not take kindly to his making money on the side. Penguin is killed by Owlman before he can reveal anything more.
Red Robin and Bluebird would see Red Robin and Bluebird looking into a series of bizarre deaths in the Narrows. The victims have translucent skin, hyper-developed adrenal glands, and the cause of death was essentially their brains being cooked. The two discover that the victims have been given mild doses of Venom, fear toxin, Icarus and kept alive in a synthetic Lazarus Pit. The dosages vary from victim to victim, suggesting experimentation. Their efforts are hampered by Barbara Gordon's announcement that Gotham no longer needs Batman or his allies, and by Firefly, who burns every lead they find (and large parts of the city). The eventually trace everything back to Roman Sionis, only for Owlman to intervene again.
Red Hood: What Doesn't Kill You would see Jason Todd and Damian Wayne try to find out who is behind the conspiracy. Sionis and the Penguin are connected through OSPRAI ("Osprey", the Office for Special Projects, Research and Investigations), a private intelligence agency overseen by Hugo Strange - it is the connection between the Court of Owls and the government, who want to bring an end to the madness encompassing Gotham. They go up against a death squad of Owlmen who target supervillains, but turn their attentions to Jason and Damian when they get trapped in Blackgate Penitentiary. They are saved by Leviathan, Talia al Ghul's personal unit of bodyguards, who reveals that Bruce Wayne is alive.
Batman: May Say Alas would reveal that Bruce Wayne is Owlman, having been caught by the Court of Owls when Gordon was killed. He has been subjected to the Venom-fear toxin-Icarus cocktail with mind control thrown in for good measure, but survived. This has unlocked his failsafe, the Batman of Zur-el-Annah. The Batman of Zur-el-Annah shows him a nightmarish future where Gotham is the capital of a techno-fascistic empire, with an army of Owlmen enforcing the law. Batman goes after his captor and the leader of the Court of Owls, Lincoln March, only to discover that March is a clone of himself. He is too late to stop his nightmarish visions from becoming real. Everything from Anarky's uprising until now has been orchestrated by Ra's al Ghul, who has seized control of the city.
Batman: The End would see the entire Bat-family band together to stop Ra's once and for all.