When they crash-land in a small plane, the Ryan family is stranded on a high-desert mesa. No food, no way to communicate with civilization, and time is running out as they strive to survive.When they crash-land in a small plane, the Ryan family is stranded on a high-desert mesa. No food, no way to communicate with civilization, and time is running out as they strive to survive.When they crash-land in a small plane, the Ryan family is stranded on a high-desert mesa. No food, no way to communicate with civilization, and time is running out as they strive to survive.