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?
Visit the Website: http://pbskids.org/cyberchase
Episode #805 / Length: 28 minutes