Oracle has received a tip-off that there is a planned breakout on a train carrying several dangerous metahumans to the Slab, and sends Black Canary to try and prevent it. The US Marshals protecting the train are suspicious of Canary, particularly when Catwoman turns up and appears to be on friendly terms with her. Black Canary is 'delighted' to learn that Joe Gardner is one of the prisoners on the rain, and is unable to prevent the whole company being swallowed up by a boom tube summoned by a strange guy in a trenchcoat.