Legend has told of an immense treasure of gold hidden on Corregidor Island, Philippines, buried there by the Japanese during WWII. A new clue to its location is discovered, sending two different teams on illegal digs. Terra Green assembles a professional team of specialists while a separate team led by sisters Riley and Bibi Cross use their father's 40 years of research to hunt after his untimely death. On different sides of the island, both teams believe they have found the point where X marks the spot on the map, but their illegal digs have put them all in danger from a variety of enemies, all whom covet the treasure.