In the Arctic Circle village of Iqaluit, known as the Las Vegas of the North, Rosaire Nicolet is found dead in a seedy hotel room rented by a stripper. Rosaire’s younger brother Ambroise arrives in town to identify the body. Ambroise worshiped his brother and wants answers. While investigators suspect a crime of passion, Ambroise has a very different theory. Polynya delves into the mysterious and poetic polar world of Baffin Island, where a cast of characters live on the margins and everyone is not necessarily to be believed.