Seattle, Washington: dawn. An earthquake trembles with a 7.9 magnitude. It's the biggest natural disaster to hit the West Coast in over a century. The aftershock his Northern California, reaching 8.4, splitting the earth and swallowing a train as it cruises along the landscape. The chance of an aftershock being greater than the quake is virtually unprecedented. Dr. Samantha Hill, an expert on hidden fault lines, and the President of the United States must race against time to save the lives of millions. Highlight by state-of-the-art special effects, it's Armageddon 700 kilometers below the earth's surface as the fear factor is raised to terrifying proportions. 10.5 is an epic spectacle of human drama and ultimate disaster.