The year is 1962. A mysterious wizard is collecting Dark wizards, the Ministry of Magic is highly involved with the Muggle World, and Professor Dumbledore assigns the four Marauders to fight the evil. This journey will lead them to Norway, Germany, and the United States of America, during the most perilous time in human history, the Cold War.

Amy and Dan Cahill have just defeated the Vespers, a global criminal organization, and are ready to relax. But another organization, Quantum, has declared war upon them, and has plans to dominate the world. Amy and Dan, along with the rest of the Cahills, prepare to take on and defeat Quantum. But little do they know the shocking truth of Quantum, and its leader...