"In a world where everyone is judged on their wealth and how many orbs they have, Pell, Logan, and Maddy can't keep up, no matter how hard they try. When they discover a mysterious note from Pell's long-lost uncle encouraging them to leave Fortress City, there's suddenly hope for a new start. They must hack their way into the system and navigate a brave escape into the unknown to help Pell's uncle fight for a cause that he believes in. The world outside...

"In the second installment of Battle Station Prime, Pell, Logan, and Maddy join Uncle Colin's secret rebel society as junior insurgents. At first, they are happy to take down the system that failed them and kept them back, but when they receive intelligence of a dangerous presence in the center of Obsidian, they are faced with a decision: save the city or let it be destroyed. Against Uncle Colin's advice, the kids plot to sneak into the impenetrable...

"The kids of Battle Station Prime hope that Brooklyn's new invention of an automatic zombie spawner will help turn the tide in the fight against the horde of skeletons sent by an unknown villain."--Provided by publisher.