Monsters long ago appeared and brutally attacked the human world. They are creatures from the outside world, almost destroying all life, including humans. The monsters have now become the ruler of all and have not conquered the world. However, one day, a force emerges to fight against monsters for the world. Appearing in front of them were numerous cat squads advancing and attacking the monster land. You are lucky to witness this war and will accompany the cat to fight. Join the battle to destroy monsters with cat warriors to protect the world.