As many may know from watching the trailer, they will acknowledge that the entire film will be about watching earthquakes, but what those who have seen the movie know, the main focus is the earthquakes on the San Andreas fault line, but the back story of the main character, Raymond "Ray" Gaines (Portrayed by Dwayne Johnson), can make even the tough feel sad.
As Dr. Lawrence Hayes (Paul Giamatti) and his late colleague Dr. Kim Park (Will Yun Lee) had investigated a cluster of earthquakes from within Nevada, they had managed to predict the biggest earthquake in history within a day of occurrence. Upon their first investigation, Dr. Hayes and his assistants, upon discovering the clusters of the earthquakes moving up the San Andreas fault line, had not only realized that they had found the triggers of the "9.6 magnitude" earthquake, but that they predicted the largest quake in recorded history.
There is usually a backstory that is need to amplify the needs and/or wants of the characters. For example, Ray's main goal was to find his family and make sure they had survived the quake, while his minor goal was helping several people along the way, when his expertise as a Los Angeles Rescue officer was needed to help those people survive.
Ray's drive for survival was led by past events that predetermined his split from his wife Emma (Carla Gugino). When Ray and his family went on a trip, one of Ray's daughters, Malley, had fallen off the raft they were using and drowned in the river, Ray being too late to save her, didn't want to discuss what had happened to her, which made Ray and Emma grow apart from one another, at the end of the day, coming into a possible divorce, so Emma could be with her new boyfriend, multi-millionaire architect Daniel Riddick (Ioan Gruffudd).
After Emma and Ray reunited to find Blake (Alexandra Daddario), sooner or later they did. Blake and her new friends, Ben (Hugo Johnstone-Burt) and Ollie (Art Parkinson), had sought high ground in a skyscraper, designed by Daniel Riddick's company, which was still under construction, the beams not holding out because of the tsunami following the mega quake, the water pressure crippling the building's beams on the lower floors already submerged within the water. Ray tried everything he could, not wanting to become childless, losing both his daughters. Blake attempted to give up, to make things easier for her father, who wouldn't give up on her survival. He nearly gave up on CPR compressions, but his determination to save Blake urged him on, (to prevent a deja vu from both his daughters), until her heart continued beating, and she recovered from her near-death experience.
"San Andreas" is one of those films that are majorly stereotyped, and requires people to view the film to learn the story behind the story.