The archaeological excavation at La Roque Castle in Castelgard, France, appears to be like any other dig. At least it does until archaeology student Kate (Frances O'Connor) and assistant professor Andre Marek (Gerard Butler) discover a note from their boss Professor Edward Johnston (Billy Connolly) dated 1357, but the chamber has been sealed since the mid-14th century. Knowing that Johnston is visiting the dig's main funder, cutting-edge computer company ITC, Kate and Marek head for corporate headquarters along with Johnston's son Chris (Paul Walker), and team members Stern (Ethan Embry) and Francois (Rossif Sutherland). To their astonishment, the team finds that ITC inadvertently discovered a wormhole leading to Castelgard circa 1357, that they have the ability to transport 3D objects through the hole, and that Johnston is trapped there with the team being his only hope for rescue. But is ITC telling them the whole truth