TNT has ordered the drama pilot “Lumen,” a fantasy vehicle about a family locked in an alternate world, from Steven Spielberg’s Amblin TV and James Frey’s Full Fathom Five.

Project, co-produced by TNT Original Prods. and ABC Signature Studios, revolves around the disappearance of a famous author of a series of fantasy novels and a family of four that winds up transported to a war-torn mystical world that resembles her novels.

Chris Black penned the script and is exec producing with director Joe Johnston (pictured), known for “Captain America: The First Avenger” and “Jumanji.” Amblin TV’s Darryl Frank and Justin Falvey, Frey and Full Fathom’s Todd Cohen also exec produce.

“Lumen” has been gestating at TNT for some time. The pilot greenlight comes even as the cabler has a big vacancy at the top of its programming department following the departure earlier this month of Michael Wright as TNT/TBS/TCM programming prexy.

With Wright’s departure it was not immediately clear if “Lumen” and a handful of other projects he championed would receive orders, but “Lumen’s” strong auspices probably made it a no-brainer for a greenlight. Wright shouldn’t have a hard time keeping up with the project as he is poised to join Spielberg on the film side, as CEO of DreamWorks (which is wholly separate from Amblin TV), in January.