It was previously reported that the NuImage/Millenium Films project would centre on the Vietnam veteran dealing with drug lords and human traffickers in order to rescue a young girl kidnapped near the US-Mexico border.
However, Stallone clarified the plot rumours in an interview with Ain't It Cool. He claimed that the story will be based in the Pacific Northwest, where experiments are taking place on elite soldiers. When the military's plans go wrong, John Rambo is forced to come in and save the day.
Speaking about the villain of the movie, Stallone added: "It's not a super-soldier, it's a feral beast; a thing. It’s this amalgamation of fury and intelligence and pure unadulterated rage, from before men became human - it’s inhuman!
"It's man's 'conscious' fighting his dark, uncontrollable unconscious. It has absolute cunning and intelligence and a will to survive that is only matched by Rambo's."
Shooting starts in the spring.