Former U.S. GI Raymond Gaines (Dawn Johnson Dwayne Johnson) is now a helicopter rescue worker for the Los Angeles Fire Department after ending his career in smoke and fire. Although he went all out at work, was respected and trustworthy, none of this could save his failed marriage. After a short vacation, Ray returned to work when the largest earthquake in a century occurred in southern Nevada, and the Hoover Dam was completely destroyed. Not long after, another round of strong earthquakes hit Los Angeles from San Francisco. Lei watched from the helicopter the horrific scene of the bustling city turning into ruins in an instant. At this time, his wife Emma (Carla Gugino) and daughter Blake (Alexandra Daddario) are in two cities. In order to save the two people he loves most, he moves forward bravely, racing against the earthquake...