Abandoned in the northern French countryside is a castle known as Black Sun. Its whereabouts are no secret, but its demonic aura kept the public away--until now. Led by Amanda Cohen, a renowned historical preservation group intends to spend thousands of dollars in an effort to bring this medieval landmark back to its former glory.
It's not long before Amanda begins to learn of Black Sun's creator, a duke known as Hugues de Lamonthe. Unbeknownst to her, though, Amanda is being stalked by a group of tomb raiders, hungry for the gold rumored to be hidden deep in the castle's bowels. Caught up in this plot is Security Director Donald Miller who really just wants to get home to his family.
Kidnapped and taken against their wills, Amanda and Donald are forced to help the band of thieves find the legendary treasure. As they slowly descend into the undiscovered pits of Black Sun, Amanda uncovers the wicked history of Lamonthe and a sinister curse linked to his gold. Portals spawn creatures from Hell, and its minions wreak havoc upon the intruders. Amanda is convinced that the treasure will mean their doom if she does not break the curse in time.