The Far-future society where the development of civilization stopped. Hiyoko, a high school girl who hopes to enter the art university runs away from her home because her father clear out the painting drawn by her deceased mother. Hiyoko who has no place to go, wound up in the stadium "Asylum" where people live in tents as hand to-mouth existence. At the Stadium "Asylum," Hiyoko meet Akira, the leader of street children. In the name of beautification of the city, Patronage-driven police department decided to demolish the stadium. As the protesting campaign, inhabitants of Asylum decide to hold a street culture event "the Asylum Session."