Centurion Quintus Diy guards the northern frontiers of the Roman Empire in hostile Britain for two years. Cold, wet and treacherous enemy attacks every day reduce the number of the garrison. The leader of the Picts Garlakon prefers not to engage in open battle , because he works secretly and suddenly at night. At dawn the Romans counted dead people and "sow the ground" with them. Centurions have never made such a war without honor and end. Britain does not want to bow in front of Rome. In one of the bloodiest nights entire Roman garrison was defeated by the Picts. Only Centurion Diy managed to survive.