Exclusive look: Trailer for All Blacks legend Richie McCaw's new movie

Richie McCaw has gone from silver fern to silver screen, with a new film revealing his inredible journey from small town Kiwi kid to legendary All Black.

Chasing Great features never before seen footage of McCaw, his friends and family, and weaves his life story into his final season as an All Black.

"I was always quite keen to make sure I kept some of the private stuff private, not for any reason other than I just felt that was the right thing to do," McCaw says.

The chance, however, to "inspire some young kids" saw him take part in the project.

"You don’t have to be given some super human talent or anything to fulfill your dreams."

Chasing Great traces McCaw's life from a small town kid in Kurow through to leading New Zealand to two World Cup titles. 

The film also features a stunning version of Everybody Wants To Rule The World by Lorde, and is directed by Michelle Walshe and Justin Pemberton.

"This is a film for New Zealanders young and old, it will really connect with anyone interested in what it takes for an ordinary person to achieve phenomenal accomplishments," Ms Walshe says.

The film opens in cinemas on September 1.