Adonis Creed, the newly crowned heavyweight champion, is challenged by Viktor Drago, the son of the man who killed his father in the ring. With the help of Rocky Balboa, Adonis trains to face his fears and protect his legacy.

Adonis Creed has been thriving in his career and family life. However, when a childhood friend and former boxing prodigy resurfaces, Adonis is forced to confront his past and face off in a boxing match. The fight becomes more than just a physical battle as Adonis must confront his guilt, shame, and the truth about his friend's motivations.

In 1998, Adonis "Donnie" Johnson, son of Apollo Creed, is taken in by Apollo's widow. Years later, Donnie pursues a career in boxing and convinces Rocky Balboa to train him. As Donnie rises in the boxing world, he must also navigate his father's legacy and Rocky's battle with cancer.