In the Dark Ages, during the 6th century, the son of Uther Pendragon rise to take back his land from the invaders. He is young and not of noble birth, but he is the one who took Excalibur from the rock.

The strong Saxons have taken the East of the country, holding Roman Forts. Above the Adrian Wall the savage Picts are controling the land and attacking anyone comes in it. The Irish pirates are trying to take their share and began the invasion of the West coast.

In this country with no ruler, Arthur must show his quality to be accepted by the other Lords and destroy the invaders. With the cousels of the strange Merlin, he will have to find the mythic thirteen treasures of Britain and gather the greatest knights to help him in his task.