But Rome won't sanction any missions beyond Hadrian's
Wall, built to keep out the dangerous, savage tribes that reside north
of it, so it's up to Marcus, whose career in the military has come to an
abrupt end due to a battle injury, along with his fearless but Rome - despising Briton slave, Esca (Bell, Jumper), to find out what happened to his father and try to return The Eagle to its rightful place in Roman hands,