After the incident of Jurassic World Fallen Kingdom scientists head back to Isla Nublar where they begin to breed strange creatures that look like the creatures from the Monster Hunter games. One of the monsters known as Deviljho breaks free. He hunts down a whole bunch of scientists and gets into a fight with a large Wyvern known as Rathian they fight for hours but Jho wins. The scientists send out a hunting party to try and look for Deviljho they find him but get eaten. Another large creature called Barroth comes and fights Deviljho after long hours of battling a giant leviathan called Lagiacrus emerges from the water and eats Deviljho.