Adonis Creed has been thriving under the mentorship of the legendary Rocky Balboa, winning a string of bouts that secure him the heavyweight championship. However, his success in the ring and his relationship with his girlfriend, Bianca, face a new challenge when a blast from the past resurfaces. Ivan Drago, the Russian boxer who killed Adonis's father in the ring decades ago, is back and has brought forth his own son, Viktor Drago, a powerhouse fighter. This looming threat stirs up old wounds, prompting Adonis to consider a match that could prove his worth and avenge his father, though it may bring significant risks.

While Rocky is haunted by his own history with the Dragos and fears for Adonis's safety, he remains in his corner, albeit with hesitation. Tensions rise as Adonis trains for the potentially life-altering fight against Viktor, who is eager to reclaim his family's honor. The battle isn't just physical for Adonis; it's also about confronting his father's legacy, his own identity, and the future he wants for his family. The impending clash will test his limits, his heart, and his will as he steps into the shadow of his past, all while grappling with the implications of his choices on those closest to him.