Hot off the heels of his wildly successful Netflix series The Gentlemen, filmmaker Guy Ritchie’s latest project is effectively his version of a James Bond film, set amid World War II.

An adaptation of Damien Lewis’s 2014 nonfiction book about Operation Postmaster, the film features Ian Fleming, a British intelligence officer in 1942, conspiring with Prime Minister Winston Churchill to derail Germany’s U-boat supplies. As the story goes, this mission, and its designated leader, Gus March-Phillips, formed the basis for what would later become the James Bond literary franchise.