Historian Dr. Nina Gould is visited by her stepbrother, whom she had not seen for ages. With him, he brings a man holding him hostage. Nina has to help them locate a man reputed to own the Holy Grail, or else her stepbrother would be implicated in a serial killing spree. Her research on the Grail reveals that a unit of Allied soldiers, called the Perceval Chapter, were entrusted with the Grail during the North African Campaign in 1944, tasked to keep it out of Nazi hands.
With a terminally ill wife, Glasgow mechanic Court Callany is desperate for money. When an acquaintance from work asks him to help him rob a wealthy antiques collector’s home, he reluctantly agrees. However, the robbery goes wrong, and when Court tries to sell his stolen artifacts at a local pawnshop, he unwittingly enters into the underworld of international relic hunting.
After inheriting a farm on New Zealand’s South Island, Lewis Harding tries his best to keep it running. The financially strapped farmer is forced to forage his new land for implements, eliciting the help of his son Gary. But when they go too close to the entrance of an old deserted gold mine, catastrophe strikes in more ways then one. When Gary’s older brother, Dr. Cecil Harding, shows up at the farm, Nekenhalle, he discovers that his brother and father had gone missing.
Belgian physicist Dr. Jacobs learns that an infamous version of the Einstein Equation, thought to have been destroyed, had been discovered by billionaire genius David Purdue. Knowing how deadly the equation’s application would be, he tries to contact Purdue to warn him, but Purdue is frantically busy trying to solve the equation. Little does Purdue know that the Order of the Black Sun is using him to solve the equation for them, to set the ball rolling on a terrible experiment that could cause mass scale destruction.
While on assignment in England, investigative journalist Sam Cleave helps to avoid a woman being stoned to death in a Muslim residential area, leading to the killing of the men who stoned her. Rescuing the woman, he had no idea what kind of world he had just invaded. Thinking nothing of it, Sam returns to Scotland. Only when the bodies of the men are taken to the local morgue, do the medical examiners realize that the corpses are part of a sect that all share the same sigil tattooed on them.
The sea off the coast of Spain holds a secret, buried under centuries of superstition. It has a reputation for being some hellish territory, where crews disappear and ships inexplicably drown in its sublime waters. This is where billionaire explorer David Purdue takes his new yacht out for its maiden voyage. He discovers something under the water that sets into motion an ancient Inca prophecy that would apparently open the hidden city of El Dorado.