After years of struggle to bring the movie to life, “Fairyland” will have its premiere on Friday at the Sundance Film Festival with a cast that includes Scoot McNairy, Geena Davis and “CODA” breakout Emilia Jones. And the finished film does exactly what Durham said it would — tell the story of those plague years not only from the perspective of the people who were robbed of their lives, but the loved ones who were impacted by their deaths.