Conversation so far:
where was the clash of the titans filmed
Clash of the Titans was filmed at Shepperton Studios near London, Pinewood Studios and Longcross Studios in Surrey, Wales, the Canary Islands, Maspalomas Dunes, Gran Canaria, among others.
Is there an older version of the movie, Clash of the Titans
Clash of the Titans is a 2010 fantasy action adventure film and remake of the 1981 film of the same name

Question: What is the story based on
Self-contained rewrite: What is the story of Clash of the Titans based on