Greta Gerwig debuted a first look at "Narnia: The Magician's Nephew" on Tuesday, previewing a full-hearted adaptation of C.S. Lewis' allegorical adventure and an IMAX-sized spectacle made for Netflix but designed for the big screen.

Led Zeppelin's "Stairway to Heaven" scores the trailer, which was also released online.

A few hours earlier, Gerwig unveiled the trailer and behind-the-scenes footage on an IMAX screen at the AMC Lincoln Center in New York, where she spoke with Stephen Colbert about her "Barbie" follow-up.