"District B13: Ultimatum" is a French action film released in 2009, directed by Patrick Alessandrin. It serves as a sequel to the 2004 film "District B13." The story is set in a dystopian future where a walled-off district in Paris is plagued by crime and corruption. The film follows two protagonists, Leïto and Damien, as they attempt to infiltrate the district to stop a dangerous gang and prevent a catastrophic event. The film features high-octane action sequences, including parkour stunts and martial arts, showcasing the skills of its lead actors, David Belle and Cyril Raffaelli. "District B13: Ultimatum" explores themes of social inequality and the struggle for justice within a divided society, while maintaining a fast-paced and entertaining narrative.