I have a theory that this Rocky movie and Rocky IV are in a totally different universe.
So movie starts off the same with a recap, and now Rocky is the champion of the world. And of course when fame is achieved others start to challenge the top dog for supremacy. So Rocky fights contender after contender until he meets this damn beast of a boxer Clubber Lang played by badass Mr. T! Strong as all get out and a big mouth to boot. So Rocky has to defend his title as champ and win. The reason why I think this is a totally different movie is because it gets out there. There's this scene where Rocky has to fight Hulk Hogan, yes I'm serious. It's for charity and all hell breaks loose. Not exactly a scene you would see in the last two emotional, inspiring movies. But this movie takes some big steps nevertheless and it completely changes how the characters interact in this world. Apollo turns ally and helps Rocky train more differently than he has before, telling him he's got the eye of the tiger. Yeah, this is where Survivor started in Rocky movies! Truly amazing 80's music and you better believe the soundtrack was selling like crazy. It's a ridiculous but great movie, and is still an important part of Rocky's story. So give it a watch and I pity the fool who doesn't.