Director Greta Gerwig could have made pretty much any movie she wanted after 2023’s Barbie racked up nearly $1.5 billion at the box office. She chose to make Narnia: The Magician’s Nephew for Netflix, an adaptation of C.S. Lewis’ sixth novel in The Chronicles of Narnia series. Gerwig has said little publicly about the film, other than she was inspired by 1960s-era David Bowie, although she said it would not be a musical. Netflix just released the trailer, set to “Stairway to Heaven,” and it’s quite the wild psychedelic ride.

The first book in the series, The Lion, the Witch, and the Wardrobe, was published in 1950, and Lewis did not initially intend to write any more Narnia adventures. But then an acquaintance asked how the London lamppost ended up in the middle of Narnia’s woodland, and Lewis was intrigued enough by the question to start a prequel, The Magician’s Nephew, in order to find an answer. Lewis found it difficult to finish the book, however, writing four other Narnia books first before completing The Magician’s Nephew in 1955.

There have been several adaptations, in various media, of The Chronicles of Narnia, most recently the early 2000s film franchise adapting the first three novels in the series. Those films showed diminishing returns, however, and by 2011 the film rights had expired. There were initial plans to adapt the fourth novel, The Silver Chair.