It's one of the most popular construction toys in the world. In the age of unprecedented competition for children's attention--from videogames to TVs to countless activities--they still spend over 5 billion hours a year playing with LEGO bricks. But building simple modular toys with interlocking bricks is a lot more complex than it seems. Their most popular set--the police station--is completely redesigned every few years to keep up with the times. From R&D and engineering to robotic assembly lines and the most fickle test market on the planet, Mega Factories: LEGO takes you behind the scenes as a real life police station turns into a playground for the imagination.