Shy Chise and nervous Shuji are high school seniors in a small town and have just started dating. But everything changes when Shuji discovers that Chise has been engineered by the Japanese Self Defense Force to transform into the Ultimate Weapon! Soon Chise is torn between realizing her potential as a devastating fighting force and her desire to share a bowl of ramen with her new boyfriend!

Amid the wreckage of warfare, both Chise and her boyfriend Shuji are learning painful and fatal lessons. Being a teenager is difficult...especially when your hometown is the target for constant missile attack.

Grappling with issues like love, trust and responsibility, Chise is buckling under the pressure of her double life. While responding to her country's military needs, she must also find time to complete her daily homework assignments. Yes, war is hell. But being a one-woman wrecking crew is no picnic, either.