The series was mainly produced by David Heyman, and stars Daniel Radcliffe, Rupert Grint, and Emma Watson as the three main characters: Harry Potter, Ron Weasley, and Hermione Granger. Four directors worked on the series: Chris Columbus, Alfonso Cuarón, Mike Newell, and David Yates. It took ten years to make all the movies of the series, with the main story being Harry's journey to beat his arch-enemy Lord Voldemort.