Any hint of his Scottish accent may have long since disappeared, and his days as a stockbroker on Glasgow’s St Vincent Street are well behind him, but Steven Lewis Simpson remains ecstatic about returning to the city.

The filmmaker, who has spent nearly two decades working with Native American communities, will bring with him, Neither Wold Nor Dog, his epic detailing the meeting of two cultures in South Dakota has now been in cinemas stateside continuously for three years.

With origins at the Kelvingrove Art Gallery, this is not your typical Native American feature.

Billed as a ‘Native American Green Book’, Neither Wolf Nor Dog follows a white American author as he ‘clumsily’ navigates modern life for the Lakota people of South Dakota.

Produced and financed by his Scottish company, with 18 shoot days in the U.S.’s poorest region, a tiny crew and a 95-year-old lead actor, the US self-distributed release launched in small towns and is outperforming Hollywood blockbusters.

But now it is coming to Glasgow for the first time, with a screening and Q&A with Simpson himself set for later this month at the GFT.

The filmmaker thinks the messages put across will resonate with the the city.

He said: “The real secret of it is that it’s a decent film - people have an emotional response.

“It is a very moving and funny road trip through a part of the United States people will have never experienced before, in the company of one of the memorable characters on screen.”

The director’s interest in the area was, in fact, first peaked by a news story from Glasgow’s West End.

The repatriation of a sacred Ghost Shirt to the Lakota people almost 20-years ago by Kelvingrove first brought Simpson out to Pine Ridge Indian Reservation from Edinburgh.

He has gone on to become probably the most established non-Native American person making Native American films today.

Now, his own work has brought his back to the city where it all started, with a 20-year anniversary ceremony reported to be taking place this summer.

He said: “Being Scottish helps, you don’t have the baggage of white Americans. That is what the film is about, the clumsiness of the author. There is tremendous ignorance in the US.

“People in Europe have a much better understanding of Native Americans, and Glasgow has been ahead of the curve.

“I remember watching the story of the Ghost Shirt on Reporting Scotland at the time - I was fascinated and just jumped on a plane and was there before the Glasgow delegation.

“When they arrived you knew straight away. It has been sunny for a whole week and then within minutes the Glasgow drizzle had begun.

“It was quite remarkable.

“The film has devoured eight years of my life, but it is a wonderful example of how we can create our own reality.”

Neither Wolf Nor Dog will show at the Glasgow Film Theatre on Sunday, May 26, from 1.45pm.