Three researchers work on a paleontological project focusing on two dinosaurs: one fictional, the one created by special effects genius Ray Harryhausen for the film The Valley of Gwangi (1969); the other real, the Concavenator corcovatus, whose remains were discovered in 2003 at the Las Hoyas site, in the province of Cuenca (Spain),very close to where the filming took place.

• El Embalse Filmmakers
• The Other Film Production
• Dunia Rodríguez
• Elena de Lara
• Marian Clar
• Jack Taylor
• Colin Arthur
• José Luis Sanz