The Kaiju Preservation Society, the US Military, the Russian Military, & many other militaries plus the whole world are suddenly under attack by none other by the Villainous Kaiju known as Monster-Z are also called Void Mogul, The Extraterrestrial Kaiju. So, it is now up to Frontrunner & some other Earth Kaiju to take him down. But here's the thing, Void Mogul has convinced a whole army of Earth Kaiju to join him in reforming the entire planet. There can only be one left standing.