The official trailer for the upcoming science fiction action film 'Valerian and the City of a Thousand Planets' has been released. The film, based on a French science fiction comic series 'Valérian and Laureline', features actors Dane DeHaan and Cara Delevingne in lead roles. Also starring singer Rihanna, the film, directed by Luc Besson will release on July 21, 2017.