For too long, a being of balance has grown tired of the sickening corrupted chaotic world order of heroes and villains, ruining Earth's nature and peace. When the students of Union bullies a paralyzed innocent tourist, the being outside of Union's sight makes a call to all dormant ancient monsters as every one of them goes to wreck havoc across most of the world. Thus, the world began to change forever and many survivors goes to rebuilding society whilst dealing with the giant monster problems they themselves have unleashed. Question is, can everyone either make peace with the monsters of coexistence or prepared to go extinct by attacking them?