How do you say no to the President of the United States when he’s asked you to stop a nuclear war? After Fritz Russell discovered his classroom door was a portal through space and time, he helped the United States resolve a foreign policy emergency. Now the president wants him to use the portal to avert the threat coming from a Middle Eastern nation that is on the verge of developing nuclear weapons. For a history teacher, travel to the past is entertaining, enlightening, and a great way to engage students. But Fritz hasn’t learned all the portal’s secrets. Could others put the world in danger by forcing him to use what he doesn’t even understand? If he uses it to help the president, there might be a war. But if he says no, he will be permitting his family, friends, and the world to remain in great danger. Should Fritz agree to be the heart of the US operation? And if he does, is there enough time for him to learn all he needs to know about the mysteries of the portal?