Batman, Batgirl, and Red Hood discover that an impossible truth may lie behind their oldest enemy: there may not be just one Joker, but three distinct individuals who have carried that name. As a new series of crimes reopens the wounds left by the criminal clown, Bruce Wayne, Barbara Gordon, and Jason Todd are each forced to confront the trauma the Joker inflicted upon them. Their investigation leads them to these three figures, each with different methods and objectives, while bringing deeply personal events from their past back to the surface. Between revenge, guilt, and obsession, the case threatens to reshape their understanding of the Joker as well as their relationships with one another.