Sylvester Stallone is readying a fifth Rambo movie which he will direct and star in. This time around, the titular character will become embroiled in the drug wars raging on the U.S.-Mexican border and attempt to rescue a young girl who has been kidnapped by human traffickers. Stallone's 2008 revival of the series met with mixed results: it grossed a weak $42 million in North America, but scored $113 million in other markets. Â