Hacker’s nemesis Ledge is back to settle the score with Hacker by finding the Bluebird of Zappiness – the key to fixing Motherboard’s virus – before Hacker can. To stop him, Hacker makes an unlikely alliance – with the CyberSquad! Together they must figure out how clues from Motherboard – plus shadow math – can help them find it first. Can this unlikely team possibly succeed?
