In 1994, an experimental navy missile mysteriously disappears off the coast of Florida during testing. While investigating the link between the disappearance and some unusual whale sightings, journalist Carol Dawson finds much more: a strange golden trident that may be worth millions... and may not be of earthly origin.

While Dawson and treasure hunter Nick Williams try to make sense of their discovery, they must also outwit thieves and criminals to keep it safe. But the trident leads them to another, more unsettling discovery. Deep underwater, Dawson and Williams encounter the highly advanced beings that placed the trident where it is. And their plans for it could change the face of humanity forever.