Kai。Nagisa,。a。normal。high。school。girl。who。wishes。to。one。day。become。a。professional。wrestler,。is。suddenly。approached。by。a。robot。known。as。an。Iczel.。Iczel。urges。her。to。help。save。the。Earth。from。invading。aliens。called。Geas.。The。Geas,。led。by。Chaos。and。Cross,。are。bent。on。stripping。Earth's。resources。and。then。destroying。it.。To。fight。the。invaders,。Nagisa。must。merge。with。Iczel。and。become。a。battle-suited。warrior。named。"Iczelion".。She。is。reluctant。to。take。up。this。sudden。unbelievable。task。and。fight。with。the。other。Iczelions。of。Earth。because。Nagisa。just。wants。to。live。a。normal。life。without。having。such。big。responsibilities.。Nagisa。must。overcome。her。fears。and。fight,。together。with。other。Iczelions,。to。prevent。the。invading。alien。forces。from。destroying。their。homeplanet,。Earth.