Arkham Asylum may have been decimated during A-DAY, but its legacy
lives on.
Bloody, broken, and beaten...but Batman has a mission.
When the terrorist organization known as THE RED CROWN took control of
Mayor Nakano's personal security detail, only the Batman could protect
Gotham's highest-ranking city official from certain death! But when the
pair is thrust into the sewers below, a much more sinister threat lurks
in the darkness. Better look sharp, Batman, because a hundred thousand
eggs with a hundred thousand little monsters inside are about to
hatch...and they look HUNGRY... And outside of the sewers, the city
streets being overtaken by larger, (somehow even more) horrific
creatures! Collects Detective Comics #1044-1046; Detective Comics
2021 Annual #1.