Stuck at a crossroads in her personal life, it falls on high school English teacher Miss Stevens to chaperone three of her students — Billy, Margot and Sam — on a weekend trip to a drama competition.
As mass of solar storms causes tsunamis, volcanoes, and flooding, a city-dwelling family attempts to flee to the relative safety of a group of high-elevation caves several miles away.
Scientists make a horrible discovery: The "Big One" is coming in two days, with it, California will sink to the ocean. Their only hope is to rupture a volcano that will displace the earthquake's energy and build a new crust on the surface. But as fore-shocks turn California into chaos, it's a race against time the scientists might not win.
