Sio Ogura is a shy misfit who’d rather talk about tanks than gossip about  girl stuff. She’s plagued by reoccurring dreams of ancient battle scenes,  and her only friend is a kindhearted popular girl named Asao. But Sio’s life  takes an explosive turn when a school field trip is interrupted by an  outbreak of Evolutionary Invaders: hideous alien creatures hell-bent on  nuking the planet. During a daring attempt to rescue Asao, Sio discovers  that she’s an E-Gene Holder: the reincarnation of a historical figure capable  of summoning special weaponry. Possessed by the spirit of legendary  warrior Oda Nobunaga, Sio joins forces with the reincarnated versions of  Jack the Ripper, Galileo, and Geronimo for a high octane alien shooting  spree. Survival is a longshot, but in the battle to save humanity, Sio’s the  girl with the biggest gun!