All this speculation is pointless. After careful analysis of the first two ‘Jurassic World’ films I have successfully been able to infer the entire plot for the next one. Remember the scene in which the crocodile dinosaur breaks into the room and gets lava spilled on its face
(“tis but a scratch”)? After watching it many times, I realised, the dinosaurs were
indestructible all along! It will solve all the plot holes in the film, eg: Owen surviving being burnt by lava/ash? He is a dinosaur hybrid! The use of bullets to break the hamster ball, which was stated clearly in the previous film to be bulletproof? The bullets were made of
Baryonyx flesh? The fact that the next film will inexplicably feature
Brachiosaurus because fans are making such a fuss? It was indestructible too! At first glance, it would appear this development would completely contradict some of the previous films, but you see,
some dinosaurs are more indestructible than others! That way the kaiju, I mean, the “
Mosasaurus” was able to defeat the Indomitablus-Rexus or whatever it was called.
Also, it will turn out, the Indian dinosaurs from both films were not the villains (you couldn’t have a villain coming from the same country as the benevolent founder guy of the fourth film, right? I mean, it would be like making a European dinosaur attack Hammond! What blasphemy that would be!). It turns out that they were both trying to cure cancer! If you remember, in one scene in Falcon Kingdok
Chris Pratt comments to the evil guy about how he was smart, and could have cured cancer (starts at around 00:43). Since Owen is part dinosaur, he must be very smart, and therefore what he said was true. We can infer that smart people (and dinosaurs) can cure cancer. Therefore, both White Charcharodontosaur and Fake Raptor were simply trying to help further the medical field, but were grievously misunderstood by the people.
Concluding the plot of Jurassic World 3 from this information is a fairly straightforward excersise which I will leave to you to do yourself.