South Korea is currently ranked as the most innovative country in the world. Our mega journey begins at one of the most technologically advanced LED monitor factories on the planet. We then take to the seas to see how the world's largest shipbuilder has developed an amazing new method for constructing ships. Discover one of the busiest subway systems in the world, and the high-tech command centre that's designed to keep everything on the rails. We'll also visit the largest auto assembly plant in the world.