In "Luther: The Fallen Sun," John Luther is determined to catch the serial killer who has been terrorizing London for months. However, Luther's past mistakes come back to haunt him when he is framed for a crime he didn't commit and is sent to prison. While behind bars, Luther is taunted by the killer, who continues to target innocent people.
After months of stewing in his cell, Luther decides that he can't wait any longer. He manages to escape from prison and sets out on a relentless pursuit to catch the killer. Despite being on the run from the police, Luther uses all of his skills and resources to track down the killer and bring him to justice.
As Luther gets closer to the killer, he discovers that there is more to the case than meets the eye. Luther realizes that the killer has a twisted motive and that there are others involved in the murders. Luther must navigate a web of deceit and danger if he wants to catch the killer and clear his own name.
Throughout the movie, viewers get a glimpse into Luther's troubled psyche as he confronts his own demons while trying to stop the serial killer. The movie is a suspenseful thriller with a high-stakes cat-and-mouse game between Luther and the killer. It's a gritty and intense ride from start to finish.