The Librarians newest recruits are searching for an artifact from a time of myth and magic, but it isn't Excalibur - The Library already has that.

'The Librarians' New Preview Revealed, When Will Noah Wyle Appear?

Instead, The Librarians' series premiere is titled "And The Crown Of King Arthur," and Flynn Carson's (Noah Wyle) latest hires will head to England to suss out the old king's headgear.

A spinoff from TNT's The Librarian trilogy, the upcoming series will follow the exploits of the Metropolitan Library's newest archivists. Tasked with finding and preserving the world's supernaturally charged artifacts, Jake Stone (Christian Kane), Ezekiel Jones (John Kim), Cassandra (Lindy Booth), and Eve Baird (Rebecca Romijn) will help pick up the head librarian's (Wyle) massive caseload while evading the Serpent Brotherhood.

'The Librarians' Behind-The-Scenes PHOTOS Of New Characters & Villain; How Will TV Spin-off Far?

The TNT adventure will premiere on Dec. 7 with "And The Crown of King Arthur," which will be two hours long. The series opener will feature Wyle, although Flynn Carson won't appear in every episode due to Wyle's involvement with TNT's Falling Skies.

Find out what's next for the Library's tech expert (Kim), resident genius/art history buff (Kane), the synesthesia-gifted Cassandra, and the gun-toting Eve this winter. Scroll through the photos above and click the video below to get a glimpse at the crew's first adventure.