A Massive war that once plagued the world in fear and terror. But leaving the world in chaos and confusion for no side really succeeded in the war. But there are people who still manufacture/make pre-war machines and deadly creatures. So to protect the remaining civilization the newly found tribes and tiny towns came up with a new idea to protect their huge and towering walls. They would have to force teens to take this power to do so. But unfortunately for Star fujikosaki and newly found friends they must be put to the test. In order for there familys and friends to survive.