In an alternate world, no atomic weapons were invented and the Cold War between the U.S. and the Soviet Union is fought at the Pax Games with robotic mecha war machines operated by young pilots. The 1963 games are about to begin and the stakes are high. Jo Linden is invited to compete for Team USA and since she needs the prize money to save her father's mecha repair shop, she agrees. However, soon she learns pilots are dying of poisoning and a deadly political plot puts the world at risk of World War III.