Serial Maven Studios has given Variety exclusive access to the trailer for Neil Diamond and Joanne Robertson's "So Surreal: Behind the Masks," a Native American documentary premiering at this year's Toronto International Film Festival.

The film follows Cree filmmaker Neil Diamond ("Reel Injun," "Red Fever") as he explores the anthropological connection between Yup'ik and Northwest Coast ceremonial masks and the surrealist artists who draw inspiration from them.

The film explores the enormous influence that historical Indigenous art continues to have on contemporary artists, the complex process of repatriation, and why it is important that Indigenous communities have access to their cultural artifacts, which are often held in museums and private collections.

What begins as an exercise in investigating complex problems quickly takes on a practical dimension when Diamond becomes involved in a mission to return a ceremonial Kwakwa̱ka̱ʼwakw mask to its rightful owners.