"The Professor" in the film is actually Sir Arthur Conan Doyle, the creator of Sherlock Holmes, who is suffering from writer's block and depression after the death of his son. He meets Agatha Christie, a young writer who is also struggling to find inspiration for her work. Together, they embark on a journey to a deserted town called the City of Rust, where they hope to find a cure for their respective ailments.
The City of Rust is a post-apocalyptic wasteland that is inhabited by a group of scavengers who have formed their own society. The residents of the town are distrustful of outsiders, but Agatha and Doyle are able to earn the trust of some of the residents, including a young girl named Frankie and a mysterious figure known as the Doctor.
As Doyle continues to grapple with his grief, he becomes obsessed with finding a cure for his illness, and Agatha begins to uncover secrets about the Doctor and the true nature of the City of Rust. The two writers must work together to navigate the dangers of the town and unravel the mysteries that surround them.
Overall, Agatha is a compelling and thought-provoking film that explores themes of grief, creativity, and human connection in the face of adversity. With strong performances from its two lead actors and a hauntingly beautiful visual style, it is a must-watch for fans of post-apocalyptic dystopias and literary mysteries.