According to Variety, the story centers on a weary hostage extractor who travels to Paraguay's Ciudad del Este, a border town considered one of the world's most dangerous and corrupt locales, to save a kidnap victim.
The brothers have been researching this story for several years and visited Johannesburg, South Africa, as well as other gritty metropolises to flesh out the story. They will be traveling to the South American city of 250,000 inhabitants soon; they're looking to return to their gritty filmmaking roots.
For the duo, the project marks a big departure tonally from their most recent work, the Owen Wilson comedy You, Me and Dupree, and harks back to their first two films: Pieces and the George Clooney starrer Welcome to Collinwood.
No production date has been set.