In a film based on the novel by Michael Crichton, a group of archaeological must travel to the past to rescue their trapped professor (Billy Connolly). Led by the professor's son, Chris Johnston (Paul Walker), these young men and women must survive the treacheries of a medieval France on the brink of war and get back to the 21st century, but time is quickly running out. The group gets separated and must survive on their own or in pairs, while in the future, the machines and scientists who control their ability to return to their own time are having a breakdown. The future hinges on whether this group can make it back before everything blows up, leaving them stranded in the 14th century.