Does his idea for a Rambo prequel.

Written by Stallone and Matt Cirulnick (Absentia), with Adrian Grunberg (Get the Gringo) directing, Rambo: Last Blood follows John as he heads down to Mexico to save his surrogate daughter Gabrielle (Yvette Monreal), after she's captured by a drug cartel that deals in sex trafficking. It's the first Rambo film produced since the confusing-titled Rambo was released in 2008, and took on several different forms over the course of its development. At a certain point, it even pitted John against a deadly monster in a script known as Rambo V: The Savage Hunt.

Related: Rambo: Last Blood Cast & Character Guide

For those who are wondering, Rambo: Last Blood has a credits scene... sorta. The first half of the end credits are set to a montage of clips that recap the events of the Rambo film series, including (curiously enough) Last Blood itself. However, the montage then concludes with some additional footage that sheds more light on what, exactly, happened after the final shot of Last Blood proper.

Sylvester Stallone in Rambo Last Blood

A big part of the reason why Last Blood took so long to happen can be chalked up to Stallone going continuously back and forth on whether he should revisit the John Rambo character again after 2008's Rambo. That film concluded with John returning home (in more than one sense) to his estranged father's ranch in Arizona, with the intention of living out the rest of his days in peace. It didn't provide a definitive ending to Rambo's story, but many fans (Sly included) felt that it was as good a way as any to retire the character. That may explain why Last Blood (without getting into spoilers) takes a different approach to tying up its story threads.

With Rambo: Last Blood projected for the other Rambo sequels, and it hasn't stopped the property from lasting nearly forty years already. Either way, those who see Rambo: Last Blood in theaters ought to hang around for the credits, especially since it may well be the last they see of John Rambo's world on the big screen (with Stallone playing him, anyway).

NEXT: Read Screen Rant's Rambo: Last Blood Review