So Menace, Batwing's old friend Russell, has taken over the Gotham Underground, which apparently was in Catw-HRRUUGH... sorry, threw up in my mouth a little, but you get the point. Sooooo society of weirdos under Gotham? Cool. Anyways, he's starting somewhat of a rallying cry, with the goal to take over Gotham by selling death to those too afraid to live. By "death" I'm assuming it's this drug they're manufacturing, which Gordon and the GCPD can't figure out where it's coming from.
Meanwhile, Luke's sister is still missing, so he finds a group of dealers who were once in control of their neighborhood, until the Underground took over, and extorts some information out of them. Apparently, how you get in contact with the Underground is that you talk to some rats, and the Underground finds you. Luke things this info is a joke or code for something, but with Ratcatcher involved, you literally just have to talk to the rats, who talk to him.
Conveniently enough for Ratcatcher, some of his rats were watching Luke interrogate the dealers. So, Ratcatcher knows Batwing is looking for Tam, and Menace wants to know why.
Back at Luke's house, tensions are high as Lucius and his wife start to argue, leading Mrs. Fox to storm out, frustrated that nothing has happened with finding Tam. Luke tries to talk to his father about some personal stuff, but it's not the time. The two men leave the house to spread more missing posters, and for Luke to pick up his youngest sister from a friend's house, but something is wrong... Wrong in the form of the father of Luke's sister's friend, running to their house, his daughter in hand, telling Luke and Lucius that a huge monster came into their house, and kidnapped Tiffany.
Luke rushes to the demolished house to find a message specifically for him on the wall that says: "Master Torres was right." This callback to issue #25 lets Luke know immediately that this was Russell's doing.