Reporter: In the last 50 years we've doubled our population, tripled the amount of food and water we use, and we have quadrupled the use of fossil fuels. Every four days there's a million more people on the planet. How is the world going to cope with this explosion in population?

The premise is that overpopulation has caused a worldwide crisis resulting in a strict, one-child policy. This means that any families with more than one child have to surrender their children to the Child Allocation Bureau. Everyone is monitored and tracked.