Transformers Age of Extinction Plot Got Me Interested

Thanks to IMDB i now know that the story of the new Transformers will take part four years after the third Transformers. Humans now know the alien technology and build Transformers of their own to capture or kill remaining Transformers- both Decepticons and Autobots. So I like that, humanity turning its back on the Autobots, a very mankind thing to do. So the Transformers are becoming extinct. Mark Walhberg's character is an inventor who is struggling or something and needs money. He takes scraps from cars to build stuff and accidently gets his hands on Optimus Prime and Autobots, Decepticons, the government and who knows what else, are after Mark Walhberg's guy and his daughter. So they team up with the autobots as an even more serious shit is hitting the fan, worse than that big invasion in the third movie and I have no idea where the dinosaurs come in place. This is the summary of the plot. No idea what will happen.