Valerie and Samantha are disappointed that their schedules were not allowing them to spend a week together this summer like they have done every year since they were young. Their parents are able to plan a weekend camping trip towards the end of summer.

The girls are happy for the visit, but sad to think they can't go through the mirror this year on another adventure. They discover the magic is not only within the mirror, but within themselves when they are together.

Merlin the magician makes a timely appearance to take them on their quest to help Arthur find his true identity and his place in Camelot.