Four years after the Warner Bros. heist adventure Yucatan was first announced, the project is moving forward with screenwriter Terry Rossio (The Lone Ranger, Pirates of the Caribbean: On Stranger Tides) coming aboard to re-write the script. Anthony Peckham was first set to write the script when Robert Downey Jr. attached himself to star in 2010.

The story is based on a massive 1,700-page movie treatment written by legendary actor Steve McQueen in the 1960s, which he was developing as a starring vehicle for himself. The treatment was discovered in two leather-bound trunks by the actor's son Chad McQueen in 2005, 25 years after his death in 1980. The original treatment followed a salvage expert (Robert Downey Jr.) and his search for lost Mayan treasure in the Yucatan peninsula. No details have been given for the updated story, but Terry Rossio and actor/producer Robert Downey Jr. are using the original premise as a jumping off point for "a mind-bending adventure."

Robert Downey Jr. is producing alongside his wife Susan Downey, David Gambino and Dan Lin. No director is attached at this time. Here's what Robert Downey Jr. had to say in a statement.

"To imbue a McQueen project with a sense of how he might have made it nowadays is a challenge and a thrill. Rossio is more than a great writer, he's the perfect fit to embrace the existential nature of the project with the action, story and characters that drive Yucatan."

Terry Rossio's writing credits include all four Pirates of the Caribbean movies, Shrek, Deja Vu, National Treasure: Book of Secrets, G-Force and last year's The Lone Ranger.