Japan has been "invaded" by the gods. Tokyo, dwelling place of the gods, has been declared a "danger zone" and tightly sealed off by an impenetrable fence. A girl by the name of Waka keeps gazing beyond the fence's boundaries. Waka came to Tokyo from Saga in order to see her friend, but there she meets Tokinaga, a researcher who had been vigilantly guarding the city. It's this meeting that will change the fate of the world...