The SG-1 team finds a vo'cume device that reveals the story of an ancient Roman Goa'uld that assumed the guise of Mars, god of war. When activated, the team learns the treachery laden fate of one of the most powerful and ambitious System Lords ever. Join Jack O'Neill, Samantha Carter, Daniel Jackson, and Teal'c as they discover that Rome wasn't built in a day, but it could be destroyed in one.