Chernobyl Diaries Warner BrosThe horror movie opens May 25, 2012. Diaries, a Warner Bros. release from Alcon Entertainment and FilmNation Entertainment, is set in Prypiat, the city that housed workers at the Chernobyl nuclear reactor. A group of friends vacationing in Europe become stranded in the city — which was abandoned after the nuclear reactor there melted down — and discover they are not alone. Jesse McCartney, Jonathan Sadowski, Olivia Dudley and Nathan Phillips star. It was directed by Bradley Parker from a script by Carey Van Dyke and Oren Peli.