IS

"Four seconds in, Dad. Hold. Four seconds out. Don't fight the air." To Gotham, Batman is invincible. To sixteen-year-old Cassie, he’s just her dad—a man who can dodge gunfire but doesn't know the first thing about surviving when his body stops letting him inhale. Confined to Wayne Manor as a deadly summer smog wave hits the city, Cassie relies on her NG tube, her portable oxygen, and a razor-sharp mind to keep watch over the Batcave. When Scarecrow’s newest toxin takes down the entire Bat-Family, Canary-One takes the comms. Because if anyone knows how to keep calm when the air runs out, it’s Cassie Wayne.