Fan CastingRambo 5

John Rambo receives a letter from a man named Corbin, who claims he matched Rambo from an online DNA test. It turns out that Rambo had fathered a son with a Ukrainian immigrant during his brief return to the States after the events of "First Blood Part II", although Rambo has no recollection of it. The two have a father-son bonding experience before Corbin returns to his mother's homeland to teach at a university. A few months later, Russia invades Ukraine. Corbin is able to contact his father one last time before the Russians bombard the city and kill scores of civilians, asking Rambo to rescue him. Worried that his son has been killed or captured, Rambo meets with a group of sixteen foreign fighters who came to aid Ukraine. They make their way to Corbin's town, but are wiped out in an ambush at the university, leaving Rambo and three others as the only survivors. When the four men are taken to the university square, it is revealed that Corbin is the leader of the forces that captured the northeastern-most part of the country. He tells Rambo the truth: He is Kazimir Podovsky, the son of Lieutenant Colonel Podovsky, Rambo's nemesis from 1985. Rambo promises to kill Kazimir. The survivors are taken to a prison camp in Siberia to be worked to death. Rambo eventually escapes to Ukraine and kills Kazimir, Vladimir Putin, and Steven Segal. He returns to the States and becomes intrigued when Jehovah's Witnesses show him a Bible promise of a world without war.