Greed and recklessness by the titans of Wall Street triggers the largest financial crash since the Great Depression. It's left to US Treasury Secretary Hank Paulson, himself a former Wall Street banker, to try and avert further disaster.

The victims of the meltdown fight back. In Iceland, protesters force a government to fall. In Canada, ripped off autoworkers occupy their plant. And in France, furious union members kidnap their bosses.

Investigators begin to sift through the meltdown's rubble. Shaken world leaders question the very foundations of modern capitalism while asking: could it all happen again?