Tom Clancy's net force. Duel identity

A member of Megan's fencing group invites her and her fellow Net Force Explorers to experience a virtual pre-World War I adventure. But suspicious of the prejudices programmed into the software, the Explorers find out that Megan's friend really wants to become the supreme ruler of the virtual nation of Latvinia. And if they don't act fast, they'll become prisoners of a virtual world.