When Hitler finds that he is not winning the war in the European theater, he has his research arm develop a means of traveling to the future to secure futuristic weapons, to gain the advantage over the allied forces. But Hitler's door swings both ways and while playing in the basement on the building in which they live, John, Carlos, Cheeno, Mike and Angle, find and go through Hitler's Porthole. Mike goes back home before Hitler's experiment is over, which traps the others behind. Now it is up to his four friends to stop Hitler and get home before time runs out.