For five billion years, the Earth’s core has functioned like an enormous nuclear reactor. Now, it’s overheating, on the verge of a catastrophic meltdown. The planet is tearing itself apart, and under Los Angeles, pressure is mounting. Following a large-scale evacuation, Calvin Crawford is among the few who remain, frantically looking for his fiancée, Ashley Pace. Unbeknownst to him, she has been abducted and is being held captive. As Los Angeles becomes increasingly unstable, Calvin must devise a plan to rescue Ashley and ensure their escape before the city is utterly destroyed.