Inside the K-pop Dream Machine

The Korean Wave is taking the world by storm, and Korean Pop, or K-pop, is at the forefront. Krishnan Guru-Murthy goes inside South Korea's K-pop dance schools, investigating the hidden cost of becoming the next big idol. He learns how teenagers are crafted to be idols with relentless training regimes, scripted answers and picture-perfect looks, though just one per cent will 'make it big'.