In a world full of giant monsters known as Kaiju, young Ben Tennyson finds himself teaming up with a man who has the ability to transform into a Kaiju. Together, the two will rise through the ranks of the Defense Force and stop all of the evil Kaiju for good.

After Garou along with a couple of heroes and civilians got brought into another world, they find themselves still having to deal with Monsters that are called Kaijus, during there stay, they manage to help the people the same way they do things in there world, also Garou gets to the Strongest Monster in this world and that during his stay, he also helps guide Kaiju number 8.