After being brutally murdered in a subway station, a teen boy awakens to find himself resurrected by a strange computer named Gantz, and forced to fight a large force of invading aliens in Osaka.

Mitsumasa Kido discovers a misterious baby in the himalayas whom he adopts as his grandaughter. 16 years later, Saori Kido is a young girl troubled by her mysterious powers. She is saved by Seiya ...