科学家们做出了一个可怕的发现：“大”号将在两天内到来，随着它的到来，加州将沉入海洋。他们唯一的希望是使一座火山破裂，这座火山将取代地震的能量，并在地表形成一个新的地壳。但随着前震将加州变成一片混乱，这是一场科学家们可能无法赢得的时间竞赛。
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 foreshocks turn California into chaos, it's a race against time the scientists might not win.
