Birds of Prey X Gotham City Sirens [Collected Edition 1]: Gotham Underworld

It's the crossover of the century! The Birds of Prey and Gotham City Sirens cross paths to abolish the control of the Ravens in Gotham City.

In the shadowed streets of Gotham, a new era of chaos and alliances unfolds. A mysterious faction called the Ravens emerges, prompting Poison Ivy to assemble her own team and inadvertently draw Catwoman into the fray. As a bank heist orchestrated by Sofia Falcone's henchmen sets off a chain of events, the Birds of Prey investigate the city's criminal underworld, confronting Falcone's network and battling to uphold justice in a city teetering on the edge of lawlessness.

The stakes rise when Batgirl, Poison Ivy, and Catwoman are coerced into working with Cheshire under the Penguin's supervision. Their first mission-assassinating Gotham's mayor-casts them as public enemies and tests Batgirl's ability to steer her allies through moral and tactical chaos. When the mission fails, Cheshire must answer to a mysterious benefactor, leaving the future of the Ravens-and Gotham's fragile balance of power-uncertain.

Meanwhile, Dinah (Black Canary) steps into the spotlight following her separation from Oliver, reuniting the Birds of Prey and reigniting their past successes. A major performance at Gotham Stadium coincides with the city's new anti-cape policy, putting the Birds directly in the Ravens' crosshairs. Dinah must navigate deadly threats, rebuild trust with her teammates, and guide the Birds of Prey into an exciting new chapter of heroism, loyalty, and survival.

The Birds of Prey X Gotham City Sirens [Collected Edition 1] collects the first half of the Ravenous Return Arc. Omnibus 1/2 collects Birds of Prey chapters 1-12 and a story (Chapter 4) from Poison Ivy.