BBC Earth Films has signed Daniel Craig to narrate its theatrical natural-history feature “One Life.”

The documentary, directed by Michael Gunton and Martha Holmes from the BBC Natural History Unit, captures the Darwinian struggle for survival and reproduction, highlighting the interconnection between humans and animals.

Gig marks the first time Craig will have narrated a doc feature.

“The BBC Natural History Unit has proven, year after year, that its documentary skills are second to none,” Craig said in a statement. “For the filmmakers who spend their entire lives recording beautiful images of planet Earth’s dwindling wildlife, I have only a sense of awe and deep-rooted respect. I am incredibly fortunate to have been given the chance to play a very small part in that process.”

Following the pattern of the BBC’s previous theatrical docs “Earth” and “Deep Blue,” both adapted from hit TV programs, “One Life” is a bigscreen reworking of the six-hour BBC TV series “Life,” first broadcast in 2009.

With $97 million worldwide, “Earth” is the third-highest grossing theatrical doc of all time, behind “March of the Penguins” and “Fahrenheit 9/11.”

“One Life” is co-produced by BBC Earth, the natural history brand of BBC Worldwide, with Magic Light Pictures. It is being sold worldwide by IM Global and will premiere this September in Japan, distributed by Avex Group. A U.S. deal is expected to be closed by Cannes.

Amanda Hill, managing director of BBC Earth and exec producer of the documentary, said “One Life” is “the first of three major motion pictures from BBC Earth Films, with ‘Walking With Dinosaurs 3D’ and ‘Africa 3D’ set to follow, so it’s fitting that a heavyweight star such as Daniel is involved.”