The last of the three TNT drama pilots with a blinking green light have been cleared for takeoff as the network has confirmed a pilot order for Lumen. The fantasy drama, about a family locked in an alternate world, will be produced by TNT Original Prods. in association with Steven Spielberg’s Amblin Television, Full Fathom Five and ABC Signature Studios. Feature director Joe Johnston (Captain America: The First Avenger) will helm the pilot from a script by Chris Black (Mad Men).

Premiere Of Paramount Pictures & Marvel Entertainment's "Captain America: The First Avenger" - Red CarpetLumen centers on the famous author of a best-selling series of fantasy books who suddenly disappears, and a family of four finds themselves transported to the mystical alternate world that inspired her work. Once there, they are plunged into the middle of a war raging between rival magical forces, of light and darkness. Facing peril at every turn, the family must unravel a complicated mystery and uncover some astonishing secrets as they struggle to find their way home.

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Executive producing the pilot are Amblin Television co-presidents Darryl Frank and Justin Falvey, Full Fathom Five’s James Frey and Todd Cohen, as well as Johnston and Black.

Lumen is eyed for TNT’s adventure-themed Sunday night, which was launched with Amblin TV’s Falling Skies, joined this past summer by breakout The Last Ship. Lumen joins TNT’s other two recently greenlighted drama pilots, Jerry Bruckheimer and Michael Bay’s cocaine project and the DC-themed Titans.