It's as tall as a seven-story building. It can carry 853 people. And the challenge to build it was equally massive. It began with a mission to take on Boeing's queen of the skies, the mighty 747. The plan: to build the world's first superjumbo, a double-decker jetliner. Building it would be no small undertaking, and failure could mean the end of the Airbus. This is the story of the A380, from its planning to its building to its first big test. It was a high-stakes gamble, with engineering and logistical challenges on a scale never seen before. Engineers wondered if a plane this size could ever get off the ground, and they risked everything to find out.