Many years after Adonis made his own name in the world of boxing and came out of the shadow of his father with the help of great Rocky, the young boxer becomes World Champion in his category. His life is a good one on a professional and personal level, being married to Bianca, but the problems do not go too long and appear with Ivan Drago, the Russian boxer who killed Apollo, the father of Adonis. Drago is accompanied by his son, Viktor, in the boxer’s turn, and challenges Adonis to fight in the ring. Although Rocky advises him not to accept, Adonis goes over his mentor’s advice and accepts to ring with Viktor.