100 years ago, titans suddenly appeared on Earth. Soon, human civilization veered on collapse due to the titans. Humans then built a giant wall to defend themselves. Within the giant walls, humans lived in peace, but, 100 years later, the giant wall is broken.

A story about four British scientists who have created a probe which will take a seven year long trip to the largest moon orbiting Saturn, Titan. Designing and building a vehicle that will travel more than 2 billion miles across space is not an easy task as it is shown in Destination Titan. The documentary follows the story behind the creation of a probe that is the culmination of a lifetime endeavor which will be strapped onto what is essentially a giant bomb and hurled out of earths atmosphere on a seven year long journey. will they succeed? This documentary is presented by John Zarnecki and features the famous TV host and astronomer Patrick Moore.