Peter, Jonathan, and Abigail are your average teenagers trying to endure their boring summer in everyday America. They quickly discover this summer will be like no other. Stumbling upon a criminal's malfunctioning time device, the friends find themselves thrust back to the Hawaiian island of Oahu on the eve of the attack on Pearl Harbor. There, they uncover a plot to prevent the attack from ever taking place. However, there is nothing noble about this plan. The owner of the device is a Nazi sympathizer named Klara Beich. She is the granddaughter of an infamous German scientist, Dietrich von Wexler, who has created many abnormal inventions. By stopping the attack and halting America's entrance into the war, Klara would prevent her grandfather from being tried at the Nuremberg trials, and also ensure a victory for Nazi Germany. Conflicted between saving the lives of thousands of Hawaiians and preventing a major change in world history, the Brewster boys and Abby, along with their new local friend, Chuck, face many unforeseen obstacles: Nazi inventions, Japanese bombers, mobster henchmen, and the use of 1940's slang!