The coastal metropolis of Miami faces a triple threat of crumbling limestone bedrock, ferocious superstorms and relentless rising oceans.

The West Coast is home to the infamous San Andreas fault, stretching for almost a thousand miles beneath the feet of millions of Americans. But just north, there's a larger fault that could trigger a megaquake, wreaking havoc from California to Canada.

New York City is under attack as Hurricanes Ida and Ian unleash their fury on innocent people; seeing how the latest science and technology can protect New York City's 8 million residents before everything gets swept away by ferocious superstorms.