As earth continues to steer further away from the sun, life on the only habitable planet fades away. But as much of a situation it is, the people of the earth have their concerns on things much frightening. The Prism, an otherworldly spacecraft, is a living threat and the cause of the earth's movement away from the sun. As the Prism continues to attack the last remaining civilization on earth, an agent of the League pursues the only connection to the Prism earth has, an assassin hated by all: the lawful organisations, the lawless organisations, and the Prism. And her names is A.R.I.A.