Ken and his EngiNerds crew return in a new, nutty and nerdy adventure that's the perfect follow-up to EngiNerds. When last we met, the EngiNerds were battling a horde of ravenous robots, but in this latest caper, they're on the hunt for just one rogue robot. But who knows what kind of mayhem one mechanical creature can cause? And why is Ken the only EngiNerd who's worried about the runaway robot? The rest of the crew seems be missing in action and...

"The world of the Lunar Chronicles comes alive in this thrilling continuation of Wires and Nerve. Iko, an audacious android and best friend to the Lunar Queen Cinder, has been tasked with hunting down Alpha Lysander Steele, the leader of a rogue band of bioengineered wolf-soldiers who threaten to undo the tenuous peace agreement between Earth and Luna."--Jacket.