Released in 2016, "Their Finest" tells the story of a group of filmmakers in Britain during World War II who, at the request of the government, set out to produce a political film to boost national morale. The female lead, Catrin, is not initially a filmmaker; however, the production team seeks to incorporate a female perspective in the film, which is set against the backdrop of the Dunkirk evacuation. They invite Catrin to help write suitable dialogue from a woman's viewpoint. As a woman in the mid-20th century workplace, Catrin faces condescension and dissatisfaction, but she ultimately earns the respect of her colleagues through her talent, problem-solving abilities, and unique feminine touch, even stepping up to shoulder responsibilities when others falter.

The film vividly depicts the challenges faced in the film industry, reflecting the realities of that work environment. The evolving relationship between Catrin and fellow screenwriter Tom Buckley, characterized by a deep emotional connection and a soulmates-like resonance, is compelling. Catrin’s brave act of apologizing and expressing her feelings through the script evokes admiration for their profound bond. However, what is most moving in the film is Catrin's rise to a respected position through her own efforts.