Dr. Tony Newman is stunned to have successfully survived a trip through the Time Tunnel, but that survival may be short-lived when he realizes he’s landed aboard the Titanic!

When Tony and Doug land in a spaceship headed for Mars, their added weight on the ship ends up putting the mission — and their lives — in jeopardy.

Tony and Doug arrive in 1910, just as the appearance of a comet convinces the people in a small town that they are going to die and that it would be futile to save a group of trapped miners.

When Tony and Doug arrive in Pearl Harbor the day before the Japanese strike, Tony realizes he has the chance to learn why his father was never found after the attack.

The two time travelers are mistaken for British spies when they arrive outside New Orleans during the final pivotal battle of the War of 1812.

Tony and Doug try to convince a scientist on the island of Krakatoa that the volcano he has been studying is about to unleash the most powerful eruption the world has ever known.