Originally aired in 1969, The War Games marked the end of an era for the Second Doctor (Patrick Troughton), following him and his companions Zoe and Jamie as they land in a battlefield that appears to be a World War I military zone—but all is not as it seems. They soon discover that soldiers from different historical periods have been abducted and are being manipulated in a cruel game. As they work to uncover the mystery behind the War Lord and his twisted experiments, the Doctor faces one of his most difficult challenges.