Barry, Oliver, and Kara travel to Gotham City to try to find Deagan, and meet the city's new protector while discovering that Bruce Wayne has vanished. Meanwhile, a Flash from another world arrives to warn the heroes of what they face and who is responsible.

Oliver and Laurel go on TV for an interview and end up making themselves targets of two separate individuals. At ARGUS, Curtis has objections to the Ghost Initiative program when Diggle and Lyla order him to monitor the bombs in the members' heads.