The player controls Iji Kataiser, a young woman enhanced with nanotechnology, as she navigates a research facility on modern day Earth in the wake of an invasion by the Tasen, an alien species. Awakening after an aerial bombardment, Iji finds herself enhanced with nanotechnology and, learning of the Tasen and their invasion, resolves to convince the aliens' leader to retreat from the planet, guided by her brother Dan via the complex's loudspeaker system. (Wikipedia)