In 2172, most of the Earth is uninhabitable. The world is destroyed by radiation, climate change is so catastrophic that people are moving to space colonies. There is a brutal war between Nigeria and the Republic of Biafra, in which deadly mechs are involved, and soldiers are given artificial organs and bionic limbs in order to survive. In the camp of the Fighting Girls, little Aife grows up, whom Onayi, the eldest of the girls, once picked up in a war-torn village . Aify has no idea who she is or why she is so different from the others, until one day she is captured by the enemy. After a desperate struggle, Onayi decides that Aify is dead. Beside herself with grief, she becomes an uncompromising, unstoppable warrior, the stuff of legends. But years later, life gives her a terrible surprise...