In order to hide from his unwanted fame as the spitfire-pilot-monkey who emerged from a computer game to defeat the nefarious corporation that engineered him, the charismatic and dangerous Ack-Ack Macaque is working as a pilot on a world-circling nuclear-powered Zeppelin.<br><br>But when the cabin of one of his passengers is invaded by the passenger’s own dying doppelganger, our hirsute hero finds himself thrust into another race to save the world – this time from an aggressive hive mind, time-hopping saboteurs, and an army of homicidal Neanderthal assassins!