Naomi Watts is Impossible May 3, 2010 Watts joins McGregor in The Impossible Naomi Watts has signed on to star in the upcoming film The Impossible. The film is based on a true story that took place during the 2004 tsunami that hit the coast of Thailand. “Impossible,” which Juan Antonio Bayona is directing from a script by Sergio G. Sanchez, begins filming in August. Ewan McGregor will also star in the picture.