Adam Savage sits down with director Christian Rivers and producer Peter Jackson to talk about the process of adapting the Mortal Engines book series into the upcoming film. It’s a wide-ranging discussion about world building, telling cinematic stories, and the collaborative process of filmmaking at this scale.

Mortal Engines is the first of four novels in Philip Reeve’s quartet of the same name. The book focuses on a futuristic, steampunk version of London, now a giant machine striving to survive on a world running out of resources.