When an oil rig causes an eruption in a small town, it's just the first in a series that could affect the dangerous Ring of Fire that contains most of the world's volcanoes. If these cataclysmic eruptions cannot be stopped, the Earth could be headed for an extinction level event.

• Michael Vartan
• Lauren Lee Smith
• Terry O'Quinn
• Ian Tracey
• Agam Darshi
• Brian Markinson
• Brendan Fletcher
• Adam Greydon Reid