University professors, James and Stacy Sanders, find themselves caught up in the social networking world to such an extent that it affords them minimal time for themselves or their two children. A catastrophic disaster throws these two together on an uninhabited extinct Pacific volcano, with little hope of being rescued. They quickly discover that teamwork and close communication are a priority, if they plan to survive. They must rely upon their scuba diving skills, and their extensive knowledge in World War II history, to keep one step ahead of the of the forces of Mother Nature, and a relentless cold-blooded killer.