Your favorite undercover kid spy is back for his most dangerous mission yet. The Queen of England has called Mac B into action because the world is in serious trouble, and only a clever kid spy can fix it. You will follow Mac as he travels straight into the heart of the Cold War during the year 1989. His assignment is to navigate a maze of secret tunnels hidden deep beneath the Berlin Wall to find a Soviet scientist who holds top secret cheat codes. But things go terribly wrong, and Mac ends up trapped in East Germany with a floppy disk in his hand and enemy agents closing in from every side. He is stuck between a giant wall and the scary secret police. How in the world will Mac escape this trap and save the day? You will uncover real historical facts mixed with hilarious spy antics as you read along.