The book opens with a fictional historical overview/flashback to events of Homer's famous Odyssey, but alters the original plot. In the present day, Dirk Pitt, his son Dirk Pitt, Jr., his daughter Summer Pitt, and friend Al Giordino are involved in the search for the source of a brownish contamination in the ocean's waters, which leads to a diabolical plot that they must unravel and ultimately topple. As this is occurring, discoveries relating to the "true" tale of the Odyssey are made.