The young crew of the Viking ship Eagle set out on a new journey when they are given the task of delivering a message in the land of the Rus. But fate has a surprise in store for them when they are ordered to travel on the Viking trading route south to Constantinople, a route fraught with danger. They must face warring tribesmen, deadly rapids and a host of other dangers before they reach their destination. There the adventure continues when they find themselves in the service of the emperor of the Greeks.