"Black Knight" is a 2023 superhero film directed by Jo Sung-hee. It is set in a dystopian future where air pollution has made the world uninhabitable, and only a few survive. The story follows a delivery driver named 5-8, who becomes a hero known as the Black Knight, fighting against oppressive forces to protect the remaining population. The film features a mix of action and drama, showcasing themes of resilience and hope. It stars Kim Woo-bin as the lead character and includes a supporting cast of notable actors, contributing to its engaging narrative and visual effects.