Troubled Vietnam War veteran John Rambo has sought a peaceful existence among the monks in a Thai monastery but remains haunted by his combat-laden past. His friend and former commander, Colonel Sam Trautman, visits Rambo with a new mission: to help supply weapons to Afghan freedom fighters battling Soviet forces. Rambo, opting for solitude over war, declines the offer, preferring to stay in Thailand. However, events take a drastic turn when Trautman proceeds with the mission on his own and is captured by Soviet troops in Afghanistan. Learning of his mentor’s dire situation, Rambo sets aside his reluctance to become entangled in conflict once more and prepares to launch a solo rescue mission.

Venturing into the hostile terrain of war-torn Afghanistan, Rambo allies himself with Afghan rebels who are engaged in fierce guerrilla warfare against the Soviet invaders. Displaying his extensive military skills and survival capabilities, Rambo leads a relentless pursuit to free Trautman. Along the way, he experiences the difficulties faced by the Afghan people and becomes a symbol of resistance. Risking his life amid overwhelming odds, Rambo confronts the Soviet forces in a battle that pits his raw determination and combat prowess against a formidable enemy, hoping to save his friend and aid the cause of the resistance fighters.