Set in the mythical city of Camelot, in a time before history began, this epic, magical and adventure-packed adaptation of the much loved tale follows the young Merlin's enthralling encounters with the young Prince Arthur.

The mythical city of Camelot, in a time before history began, is a fantastical realm of legendary beasts and mysterious peoples. In this dangerous world, magic has been banned by the ruthless tyrant, Uther Pendragon. Merlin, a young man gifted with extraordinary magical powers arrives at the gates of Camelot as a young man, sent by his mother to start a new life. Though bright-eyed with wonder, the young sorcerer quickly makes enemies, including the heir to Uther's crown, the headstrong Prince Arthur.

Guided by Uther's wise physician, Gaius, Merlin is soon using his talents not just to survive but also to unlock Camelot's mystical secrets. And, as he does so, he discovers that his destiny and that of the kingdom's young leader in waiting, Arthur, are inextricably linked.

Episode One: Merlin, a young country boy, arrives at the great city of Camelot to find a young man at the gallows - the result of King Uther outlawing magic in his kingdom. As Merlin makes his way to find Gaius, the Court Physician, he begins to realise that the world he has entered is full of danger.

Episode Two: Valiant arrives in Camelot intent on winning the infamous sword tournament. As a disgruntled Merlin gets to grips with his arduous duties as Arthur's new servant, he notices the fighter has an unfair advantage. And, though Arthur is not exactly impressed with Merlin's talents, he might just need his help before taking on Valiant in the final...

Episode Three: As a magical plague takes a deathly grip on Camelot, Merlin takes pity on Gwen, whose father is dying with the disease. Evading a curfew, Merlin risks his life to deliver a magical power to cure her father. However, his pleasure soon turns to shock as Gwen is arrested for using magic.

Episode Four: Suspecting it is poisoned, Merlin drinks from Prince Arthur's cup. He falls into a com and can only be saved from certain death by a flower that grows deep within the forest of Balor. Arthur is ready to defy the King and embark on the quest, but is he prepared for the trials and danger he will encounter?

Episode Five: A great fighter by the name of Lancelot arrives in Camelot, but despite his bravery and skill, his ambition to be a knight is thwarted by his low birth - only Arthur and Merlin appear to recognise his true worth. Meanwhile a terrifying winged beast approaches Camelot leaving the kingdom in desperate need of a hero.

Episode Six: When a physician, the scarred Edwin, saves the dying Morgana and impresses Uther with his skills he is soon supplanting Gaius's position in the court. But soon Merlin and Gaius make shocking discoveries about this mysterious stranger. Can a weak old man and his young apprentice prevent Edwin from committing the ultimate crime?