"The Winter King" is a TV series adaptation of Bernard Cornwell's famous trilogy about King Arthur and the Knights of the Round Table. The events take place in 5th century Britain. The kingdom is constantly under attack from the cruel and greedy Saxons, who plunder villages, rape women, and capture people for slavery. Young Arthur Pendragon bravely leads the Britons to resist the foreign invaders. At first, few believe in the success of the new ruler, but it turns out that it is written in the young man's destiny to unite Britain.