In 2019, Robert Hunt is a young man with no family, desperately in need of guidance. He gets in with a bad crowd, eventually part of a bank raid in London. Miraculously, before being arrested, Robert is saved by a ghost named Viviane: the mythical Lady of the Lake, who transports him to 600 AD, to the time of King Arthur.
Robert begins as a helper in the kitchen of Camelot Castle, but due to his modern knowledge is quickly promoted and eventually becomes advisor to King Arthur. As Robert introduces things like cannons, gunpowder, and even early electricity, he is deemed a wizard and given the name Merlin. Although now a man of legend himself, Robert's journey is not over.
Leaving behind King Arthur's court, Viviane transports Robert to 1200 AD to the time of Robin Hood, no more than a highwayman when they first meet. Robert helps turn Robin Hood into a hero, but at the same time, Robert is becoming a man with power and purpose. His journey is one of adventure, danger, death, and rebirth as a simple man travels back in time to shape the legends we know today while paving his own path to greatness.