This movie couldn't decide what it wanted to be
It either needed to be about the Kid being brought into the world of male stripping, or about Magic Mike meeting a woman and her convincing him of the emptiness of his lifestyle. It tried to be about both, but really didn't end up being about either. Not to mention, for being the character who basically sets the story into motion, Alex Pettyfer's kid is basically a non-entity of a character and is poorly portrayed by Pettyfer, who is a dreadful actor.
Magic Mike was fine until Alex Pettyfer and his sister came into his life. This is the story of a man who should have fixed his credit rating and not given his new acquaintances so much power over his life.