Belly finally made a decision in The Summer I Turned Pretty series finale - but the story isn't over yet. Prime Video announced on Wednesday, September 17, that they greenlit a feature film that will conclude the story. Exact plot details are under wraps but the script will be written by Jenny Han, who wrote the books that inspired the show and created the hit series. "There is another big milestone left in Belly's journey, and I thought only a movie could give it its proper due," Han said in a statement.