In order to evade the grip of the malicious warrior and sorceress Morgana, the legendary Merlin employs his magic to whisk young King Arthur away to contemporary America. A decade later, Merlin returns to reclaim Arthur, only to discover a trendy and rebellious 15-year-old who resists his claims and has no desire to return to his previous life. Now, Merlin must undertake the daunting task of persuading Arthur about his true lineage before Morgana can seize Excalibur and unleash untold chaos upon both worlds.