Beneath the Pacific Ocean a volcano surges upward, carrying in its fiery heart a mineral more powerful than uranium. When the volcano breaks the ocean's surface, nations will battle to control what is known as Vulcan's Forge -- a source of limitless, clean, nuclear power. The secret of Vulcan's Forge begins to unravel when Mercer, a man of many talents now working for the US Geologic Survey, learns that the daughter of an old friend is in danger....