After dying a hero's death saving a stranger, Rex Variance transmigrates into a creature-infested world and reincarnates through the severed head of Ghidorah, awakening the ultimate Devour System. Starting in the depths of the tropical rainforest by hunting down the Serpent King, he progresses to the Pacific Ocean to face the formidable seventh-tier sea monster, Kraken of the Northern Abyss. He then invades the Dinosaur Outpost, laying waste to Jurassic Park. To withstand a relentless military crackdown led by the government of The States, Rex ventures to Skull Island and tames the mighty Kong. Facing the Global Monster Response Coalition—an international alliance formed to destroy him—Rex embarks on a frenzy of hunting and upgrading. From annihilating entire aircraft carrier fleets to crushing the battle mech known as The Vagabond, he charges toward an ultimate, fateful showdown against his arch-rival: Godzilla.
